there are quite a few pvt acft in Belize. A lot on the rwy at SPR might be hard to find with enough area to build a hanger. To operate for hire, you will need to contact the BDCA: www.civilaviation.gov.bz
, their web site has most information you'd be looking for. Also depends on your age, no single pilot commercial flying after age 60.
There have been attempts at float operations, logistics and maintenance for salt water operations is way difficult and expensive here.