I am not sure my wife and kids would be willing to give up the AC or the oven
I would not mind, but I don't get to make that call....lol. I have also been tinkering with ammonia refrigeration like the crosley icyball and the Einstein fridge but that is a whole other project.
So for recommendations....
Going Grid Tie - Looks like it will cost thousands for a simple 500W system due to code / regulation requirements. Will have to comply with NEC and will need an electrical engineer to design the installation for each component I have bought already and need to buy.
Going Off Grid with some items - Will probably have to get this inspected and will still need a $2000 inverter. Will have to comply with NEC and will probably still need an electrical engineer.
Going Off Grid with some items converting to 12V DC - Should not need an inspection but will have to run hundreds of feet of thick wire back into my house to convert some items to 12V. This will cost quite a bit since I have to buy new items that can work from 12V. The voltage drop of that kind of distance would be pretty bad.