October is a high demand
DVC month. The Thursday before Columbus Day to the weekend after Columbus Day (Oct 8 to 17 in 2026) is even higher demand than other times in Oct. BWV resort view and boardwalk view studios and 2BRs (which, since all are lock-offs, can disappear due to studio reservations) tend to fill for any given arrival date in Oct within nanoseconds after 8 a.m. eastern at 11-months out -- many lose that reservation battle. Thus, the issue you face is that the only reservation you may be able to get at BWV for Oct time if booking 11-months out is for pool/garden view 2BR. Moreover, if you can only get nine nights, you should make that reservation at 11-months out because even pool/garden view will likely be gone well before 7-months out, and finding some other resort at 7-months out for 10-nights, may not succeed.
With 450 points and seeking a 2BR in Oct for 10 nights, your only options other than BWV resort view, without getting more points, are OKW, SSR standard, and AKV resort view and value 2BRs. Of those, AKV value 2BRs have no chance at all for 10-nights at 7-months out. AKV resort view is likely going to be missing at least some of the nights needed for a 10-night stay, particularly if any of those nights are during that higher Oct demand time. SSR standard and OKW offer the best chance, but even those have some risk, if seeking 10 nights, of missing some nights at 7-months out, particularly during that higher demand time.
The 2BRs, at 7-months out, for the rest of the WDW DVC Resorts would require acquiring more points. Moreover, finding any for 10-nights in a row at 7-months out will be difficult, particularly if any of the desired nights are in that higher demand time of the month.