Getting studios at CCV is proving to be 11 months or ****, and sometimes even at 11 months owners will be unable to do so.
Many studio types are a challenge in fall. Certain types are a challenge year-round.
It really depends on your expectations. You want a CCV studio between November 1 and New Year's, you should buy a guaranteed week. You want to have a selection of studios at 7 months, don't travel in fall at all. You want to stay at small resorts, or in units with small inventories, own there and book at 11 months (and sometimes still not get what you want).