None of those look like they have very good soil for growing. So you have to import all your food?
Do all have ample fresh water - or do you need catchment...or desalinization?
Where do you get electricity? Is it all panels? What do you do with the panels when the hurricane season comes?
Other than that, I don't think any of them but maybe the largest has space for a landing field for my Learjet ;-/ http://privatejet.blog/small-private-jets/