I would think that you could get by with the basics, why in the world do you need a blender :?: , Nav lights I understand, and the new LED's are so great, Along with the solar charger, I would be guessing that you plan on useing a petrol powered kicker, most of them have some kind of charging system, Another thought would be a wind gen of some kind. I am thinking of a bicycle gen we used to use years ago, :idea:
Several years ago when I was Squid Fishing, off the channel Islands here on the west coast, the most important device I had was my coffee pot, other then the lights and gens to pull up the fish,
For cooking I am thinking maybe a propane stove, but there again we could alway add that inverter, or better yet a gen set, the stereo, TV, Sat Dish, micro wave, dish washer, AC/Heating system, Shower, Bath tub, ect
:popcorn:
But back to reality, you have been given some great advice, these guys are smart,
I would also always run a heaver gage wire then what is required, IE: if it calls for 20 use 18, voltage drops are a pain in the butt
Islands
( I think too much )