You’ve already got a lot of great ideas and it’s already well equipped, but I would add:
1) A stand alone 12v fridge/freezer such as a Dometic or Engel:
https://www.westmarine.com/buy/domet...2?recordNum=28
2) A mantis chain hook, galvanized, not stainless
3) A shaker siphon to transfer
fuel from Jerry cans to either your
dinghy or even the main
tanks while underway.
4) I can’t resist going over my quota....a pressure pad
alarm system that sits under a rug positioned where people enter the
cockpit.
If you’re headed to the
Bahamas wait to replace your
dinghy engine, there you can get the finest
engine ever produced by mankind- 15hp Yamaha
2 stroke. Was that five?