Norman,
We are very similar to y'all!
We have been RVing for a good while and are starting full-time in Jan. We are also headed to Florida.
Here is what I have figured out
Florida is EXPENSIVE in the Winter
The farther north you go the less expensive.
Depending on what you are comfortable spending they are some amazing places to stay.
My favorites
1. Rivebend near FT meyers
2. Williston RV park - in Williston FL.
3. Naples motorcoach - down in Naples.
There are a ton more out there though.
As part of the process I started 6 months reviewing all the bloggers out there that had 40+ footers. Took there data and mapped it all out on a google map. Then compiled tons of data that included not only the RV parks for 40+ footers but all the cool things to do in the area. All sites had to have links back to detail reviews from the bloggers.
Decided to put the map out for everyone for free. Feel free to check out
www.mhrig.com
If you would like to discuss separately email me privately and we can get on the phone and talk about options. We are going to stay at Sun n Fun in Sarasota which I would NOT recommend (We have an event going on there). Amazing how much it is going to cost.