That's too bad as Time Share Store is really good. Has OP talked to them yet about whether they should back out?
You really need to decide if you want to back out. As others have said, you probably won't have the points in hard until late in November which gives little time to rent them out. I also do not understand why the owner wouldn't have banked them before putting them up for sale. If it's a February use year they could have banked them even up to end of this month. Of course, once sent to ROFR they can't.