The whole post sounds as if you are operating in an unplanned panic mode -- no one should assume they'll move somewhere without any knowledge of the area, the housing market, etc. It sounds like you went to NC and threw out that idea after what seem to be very trivial issues that could be easily fixed, so you were never that committed to the idea in the first place. Please stop right now and just evaluate because it sounds like you have no plan and no idea what to do next. Rushing to Florida solves nothing.
I suggest it's time for your adult children, all of them, to bid you farewell and find their own homes in whatever areas they want or wherever they find work.
Unless they have some kind of issues or medical problems etc. that mean they MUST live with you -- why are you moving adults these ages along with you and your wife?
Mike, I would be very, very skeptical that the job market anywhere could accommodate as many as five of you all seeking jobs at the same time, with nowhere to live. I would fear you could all five end up in a shelter. If you are retiring after your job loss and not seeking work, why are your children going to live with you?
Please go immediately to your bank and ask to see a financial counselor -- banks usually provide these services for free to customers. You need professional help arranging finances so you have something to live on. Meanwhile, do your children work? What do they contribute to the household finances?
As long as you all feel you must live together, you are going to have huge difficulties finding a place where all of you can live and work. If there are reasons why the arrangement HAS to be that way (disabled adult child, etc.) that's different. If that is the case, you truly need both financial counseling and a lot of advice and help from social services agencies who assist families with disabled adults in them. Going to those agencies would be a better use of time than running around the country looking at houses.
If that is not the case, it is past time that your children moved out. Having to move them along with you creates tremendous pressure. I am just not clear on why children these ages must move with you. Think about this, too: If you move to Florida, and you already know they dont' want to be there, you will be living in Florida with people who resent being there and resent you for taking them there. They won't be around very long anyway under those circumstances.