Probably the OP already made her decision quite some time ago, but as a newbie to the forum I just wanted to give a thumb's up to Cape San Blas and the surrounding area. The atmosphere is a bit more on the Old Florida side than that of beautiful Captiva. However, the region is still fairly unspoiled. We lived there for 20 months before the housing market bubble burst. I saw the green flash over the pure white sand dunes, and had many, many sightings of amazing wildlife on land and sea.