Your scenario is ideal in a couple of different scenarios:
1. You can't book 7 months in advance
2. You don't travel during peak
DVC times.
3. You don't have a specific DVC you want to stay at all the time.
4. You can be flexible on the size accommodations and/or view preferences.
At 7 months all points are essentially the same, so if you can't make plans that far in advance, then owning at a specific resort isn't necessary. Also, if you want to stay at some of the smaller and/or more "popular" DVC's (BWV, BCV, or VWL), having that 11 month window is pretty important.
Honestly, I don't think you'd have much problem if you don't mind staying over at SSR or OKW (if your other choices weren't available). However, just realize that at 7 months there is no guarantee that you will get where you want, when you want, and in the size accommdations you want.
Also, when you are calculating in your "savings' thru resale, make sure and factor in the closing costs and any MN fees you might have to reimburse to the seller. Also consider the time it will take to get a resale contract. If you don't want to get the minimum of 150 points, then you'll have to purchase via resale.
If you weren't aware, there is a great promo going on with SSR right now. It makes it about $83.30 per point with no closing costs and easier financing options (if needed). To get the promo price you just need to be referred by a DVC member. I'd be glad to give you my info for referral if you decide to go that route. I'm sure most any DVC member on the boards would also be willing to give a referral.
Keep us posted on your DVC pursuit and let us know if you have any other questions!