Yeah, you are quite a ways away. Maybe you already do, but using prepreg can make the process a lot faster, much easier layup, and better final quality - but I doubt there is an autoclave that size on the island.

You could easily make an unpressurized one though, I made an autoclave for a 15"x8" solar car body I designed in college out of plywood, insulation, and a heater/thermostat.