Too bad you can't do this yourself. From where I'm sitting you're just getting a load of BS.
The kind of piece-meal installation you're describing is a waste.. esp with a big IC like yours. Of course you can run your microwave with it, and you should. But - and this is another problem - only 2 batteries isn't going to cut it. Your IC manual should talk about having a minimum of 4. You've got some serious power there, but you have to feed it.
I'd install it "whole house"..after shore/generator and before the main panel. Then everything runs, and you just leave off the WH and air.
