I guess I am going to be on the opposite side of the argument as I have four (actually six contracts), home resorts, three of them are 50 points, the last resort is 63 points. There is no "theoretically could bank and borrow and get 150" that's exactly how I use them. Then I have home resort priority with 150 (or at WLV with 63 189). I've been told this is weird, odd, strange, and yes it's not you\r normal DVC owner plan. It ended up this way because we bought each small contract with cash instead of having a loan. However for marathon weekend, a time you need 11 month window I have stayed at BLT, WLV, POly, and OKW hospitality house (I have stayed so far mostly 1 bedrooms for 5-7 days, we stayed at a POLY studio for 8 nights, this was with those "dinky" 50 point contracts). If I had one home resort I would be stuck at that one resort every year for marathon weekend, and I like to switch things up. With less being available at 7 months, and home resort becoming so important you have to decide whether you are ok with staying at one resort all the time (with possibilities of staying at one of the larger resorts at 7 months, such as AKV or SSR) or whether you want to have the opportunity of multiple home resorts. You have to do what is right for YOU I think is the most important question.
One last thing, we have no kids, so the largest unit we have booked is 1 bedroom, with 3 kids you may be wanting a 2 bedroom, and you would need more than 50 points for any significant length of stay. Something to think about. Funny thing is if I had followed all the adviceI was given when I considered DVC way back in 2004 I would have never become a DVC member , its one of the best decisions I have made.
edited: I read the post about concern over use year/dues. All my contracts are the same use year (September), I would NEVER buy different use years because then you end up with multiple member IDs. Don't do that. As far as dues... I guess I've never thought about it, in the end its one $ amount, I have them automatically deducted monthly I don't even think about it. One advantage though is that my dues arn't too bad, because two of my resorts are high dues (WLV and POLY), and two are low dues (OKW AND BLT) so it averages out.
Jennifer