BWV and BWV. Those two are the best.
Of course, you could choose another one if you want to reject mine. Reality is that all are good with different themes although BWV and Beach Club Villas have the same location advantage. OKW has the largest rooms and VWL has woodsy theming with access to MK. Second reality is that you are in the zone now where rooms for Sept may be hard to get as anything not yet reserved by
DVC members can now be rented by Disney. Thus, best bet is to call and see what is available and then choose.