Florida is really a great place to retire, but you'll need to scratch numbers 5 and 7 from the list. Our summers are very hot and humid, but it will take a full change of the seasons to become acclimated. If you want rolling hills, the northern part of Central Florida may be more appealing. Anything south of Tampa is pretty flat, unless you are on the coast and there's a lot of tall bridges in the area.

Edit: State sales tax is 6% (counties may add 1-2 cents more) and there is no state income tax.