Retirement / Financial advice

[a64pilot]

In three to five years I will retire and begin cruising. The boat will be paid for and re-fit, I'll have my retirement pay a small 401K and be 5 yrs away from Social Security. We should be OK, but

My house and land is paid for, it's actually held by a Corporation that I own, I have sole ownership, no other officers etc. When I sell the house, what should I do with the proceeds? Current thought is to buy a Condo somewhere and rent it out while we are gone with the idea of when we get old and have to return to land, at least we will have somewhere to return to.

Is there a better plan on what to do with the money? Do you have to buy a residence? I think I remember you had X amount of time before you had to buy another residence or be taxed pretty severely on the proceeds?

I'm in the US too, house and property in Georgia.