You should also take a look at independent exchange companies. I don't know if SFX would take that season on the Cape (
www.sfx-resorts.com ) but all of the following probably would:
Hawaii Timeshare Exchange (
www.htse.net )
Dial an Exchange (
www.daelive.com )
Platinum Interchange (
www.platinuminterchange.com )
Trading Places International (
www.tradingplaces.com )
All are reputable. All have either free membership or cheaper membership than the big boys, all have cheaper exchange fees, and all have request first systems. With the independents, it is the individual owner who affiliates, not the resort, so your resort does not have to have an agreement with them for you to use them. At least one also gives you three years after deposit to trade your week.
I primarily due DAE myself and have gotten some very good traces through them - summer oceanfront French Riviera, summer oceanfront Croatian coast, Thanksgiving Puerto Rico, summer Myrtle Beach, summer So Cal coast, etc.