Yes, the generator just for running the AC or charging your boat.
You can put solar on and run everything else as long as you have some sun. 200 watts min, but I would go with 300 if there is room. Run panels in series.
For fridge a DC compressor Danfoss unit is my fav. The solar will run it unless you use a lot of other DC things that draw a lot of power too and then you might run batteries low by morning. So, if you watch hours of movies and need a lot of light at night consider more batteries. I would thingk 3 would be plenty.
A 3-way propane is fine, but needs to remain within 3 degrees of level or it will be ruined. Propane will last a long time for a fridge and you prob have propane for stove anyway. If you already have this then just stick with it.
My vote is for a DC fridge, but you will have to make a chest fridge fit or get an upright DC compressor fridge or convert a propane fridge.
So, why do you need an inverter? Just to charge the laptop? Run everything off of DC power that you can. Inverters use power just being on, and are not 100% efficient when converting it.
For battery charging, mostly you will be just for the boat. Do you need sophisticated charging devices or will a cheapo battery charger work to top off the boat?
If you go solar then hopefully you never need to charge your TC batteries as the sun will do that, and driving will bring in the alternator to charge also.