How’s it going? Did you buy in?
Nobody likes lead acid batteries BUT they might be an option to ‘stage in’ to your goal…
Lead acid deep cycles don’t ship well (heavy) but if you travel to the Bahamas from the US I’m wondering what are the importation costs - duty- for stuff. Are you able to bring the panels and charge controller, inverter; into the Bahamas without selling your vital organs?
I ask because for US$1500 (here in USA) you can have a 1200W pure sine inverter, 400W solar, mppt SCC, a solar transfer switch, and 4 or 5 fla deep cycle batteries. Which would exceed your initial goal as well as make useable power daily.
Hurricane season: is it wind or debris that is the concern? If it’s wind that’s the primary concern: that’s solvable. Debris- not so much.
If you buy the right mppt, you can start with lead acid batteries and have 3-7 years (probably 5+ without abuse) from deep cycle batteries - that are cheap up front - and then get lifepo after those fla batteries begin to decline.
Just trying to throw things out there that ‘might’ be possible for $1500US and not be simply battery backup.