Think you can search this forum for Cape Air. It has been discussed more than once.
Im not current for a couple years but I do recall in St Thomas it was young ATPs building time. They all seemed happy to work for the company, but I can only assume they were not getting rich. Its a time builder.
I can say that living in
PR would be much cheaper and closer to the first world than St Thomas or St Croix.
PR has its problems, but nothing like the USVI...........