Just to clarify:
If you want to book the entire trip at VWL before the 7 month window opens, 100% of the points used must be VWL points. Transferred points retain their original home resort status.
Bottom line: Rent points from a VWL owner. If you can't, you'll either have to hope the time & room size you want is still available at the 7 month window, pay cash for the nights you can't swing with VWL points (this could be a back up plan for the 7 month window option), or you'll have to spend part of your trip at another resort.
Best wishes -