Maybe I should have added more environmental details in my question.
1. Boat will be used primarily in the summer on the coast of South Mississippi, it gets very hot here. So the a/c will most likely run a good portion of the time.
2. Boat will be used about 60% of the time as a "mother ship" to support little boat fishing Trout, Snapper, triple tail or whatever we are going to catch and will be running a #400 ice machine to keep food, beer and said fish cold.
3. I have two 12.5kw gensets, although they haven't proven themselves reliable they do run and make water and power. Only time will tell if they are reliable.
4. The inverter, in my case, would only run games, tv, coffee maker or any other devices while the genset is off.
My question would be do you really need an inverter system at the expense of delaying the use of the boat that would function by just using generated power.
Your right about selling the boat to save money.....