The only thing that I didn't see here that is an absolute must is to make sure that you buy a mandatory resort. Most Westin /Sheraton resorts are not mandatory.
Here is a list of the mandatory resorts:
Please note that there are sections of some of the resort which are mandatory and other sections that are not.
(Staroptions for a 2bd in platinum season.)
Westin St Johns WSJ: Hillside - Staroptions - 148,100
Harborside Atlantis - Staroptions - 148,100
Maui -WKORV-N - Staroptions - 148,100
Maui -WKORV: - Staroptions - 148,100
Disney World - Orlando SVV: Bella - Staroptions - 95,700
Disney World - Orlando SVV: Key West - Staroptions - 95,700
AZ Scottsdale WKV: - Staroptions - 148,100