Thanks to all; very helpful information, I really appreciate it! The DIS Boards never disappoint. Some specific thoughts/replies are below.
We had the exact same dilemma and ultimately settled on BLT because our kids were 7 & 4 at that time. We felt like the majority of our time was going to be spent at MK so it was easier to be able to walk back and forth. Now that they are getting a little older we are staying at BW/BC for one week per year and the other 1/2 weeks at BLT. If you move up to a 1 bedroom you can almost always get those two locations at exactly 7 months. With Galaxy Edge opening next year I suspect that to change though.
I appreciate the insight and your experience. Galaxy Edge is going to be a major draw for us, as well as everybody else, which furthers our pull towards BCV/BWV.
We own at BLT and love it. We have two DDs 5 and 2. (We will likely treasure the extra bathroom in the 1br when the girls get older). We stayed in BCV this past March to use the pool, but it just never warmed up enough on our designated pool day. So, as a result we hung out over at BWV. I have said if we ever add on it will be there. We loved the location and I walked through the one bedroom they have as a model. There is so much more there to do for all of us than BCV (other than the pool) imo.
That extra bathroom at BLT does look/sound nice. We may find ourselves staying there a fair bit, especially outside of pool season. However, it doesn't seem like the 11-month window is quite as important there, especially if we look at the lake view rooms.
I know you said you don't travel to WDW in June, but can you make that guarantee for the next 20 years? I ask this because buying
DVC has changed just about everyone's travel patterns. Once you experience Stormalong Bay you will be planning June trips just to stay at BC and swim there. Trust me on that.
I cannot guarantee anything for 20 years

Which is part of why this is so hard! I completely agree and understand... As for Stormalong Bay, since I initially posted last night I had that exact thought... "I'm sure we will end up going there during the summer months, largely for the pool."
What you think you know and what others will post won't end up being your reality later. The only way for you to decide on a resort is to spend time visiting the resorts and staying at your top choices. We bought BLT based on posts and excitement during the pre-sale period without staying there. Others will post that they love BLT, we don't. Too much like staying at any hotel not Disney enough for us. Renting reservations might be a way to try resorts out for yourself but don't get caught up in the pixie dust, it will blind you. You also might want to think about DL. We grew up at DL and since vacationing at WDW we haven't been back since. The expanse of WDW, the number of resorts, parks, restaurants, things to do make WDW the best value and the better experience IMO.
I appreciate you cautioning me to not make mistakes made by others. I am not here looking for somebody to tell me what to do and be done with it. This is one part of the information-gathering process, and I think asking others who have experience is perfectly fair to do. I will also say that I tend to ignore the posts that simply say what THEY like, while ignoring the specific details I've provided about my situation. I didn't ask 'who likes BLT'; I asked, 'Given your experience, what do you think works best for our specific situation and parameters.'
And as for DL, I said that we returned from our first trip out there in June. I've been to WDW many many times, so I know/understand the differences. There are parts of each that I prefer better; it sounds like you've made your choice, but my conclusion is quite different. Mostly because we absolutely love California Adventure; it is our favorite park, and perhaps vacation experience, in the world. So when it comes to making this choice, you better believe we are going to prioritize buying points to the one property that has direct access to that park.
Now, will we still love it in 10 years? 20 years? Who knows? But why buy DVC at all if that's the case?
I'd also like to try out all the properties, but I've already explained in detail how that would be a multi-year process that I'm not too excited about. I'm not in a rush, but I want to have some decisions made so we are ready to move forward when we find a deal that fits us. Between the many past trips we've made and a fair amount of research and discussions with 'experts' (who reside on these boards), I think we can reach a good conclusion.
Some great advice from others, and especially agree that only you can truly determine what your needs are. However, I would urge you to think about the above as at least a small part of your consideration on where to buy, as IMHO a longer contract has benefits regardless of where you may find yourself later in life.
On one hand, it's entirely possible that life or your interests may change in such a way that selling your DVC may be something you may consider. If that ever becomes the case and you want or need to sell in, let's say, 18 years when the kids are out of the house, a contract with 24 years left is going to have a lot more resale value than one with only 6.
The flip side of that is that if you end up hanging on to your contract until the end, do you want it to expire when you are 54 and your kids are 24 and 28? Or go for the longer contract and have it through retirement (think empty-nester trips to WDW or taking the grandkids...)
This made me re-think things a bit. You are completely correct; the value in the longer contract is two-fold. 1: if we aren't interested in it anymore after 20 years, we'd something of greater value to sell. And 2: if we ARE still interested after 20 years, we don't have to buy back in; we just keep chugging along. When I look at the total price per point (meaning total point cost + all annual dues through expiration), BCV and BWV don't look too good.
But I would also think that if the Epcot area resorts had 40+ years left on them, their price per point would be a fair bit higher, too.
We also would have roughly 40% of our points at VGC, so those are much longer-term; we wouldn't be replacing our entire lot in 24 years. And aside from that, I'm sure we will add some here and there between now and then. So while the shorter life is a consideration, and I do recognize your very valid points, there's enough other stuff to consider that outweighs the shorter contract.