Operating two separate and different banks (AGM and FLA) simultaneously rather than sequentially is an interesting option.
In your simultaneous system, the AGM bank is dedicated to inverter loads only. From another thread you said there are two separate solar chargers. Will they each have separate panels as well so you can charge simultaneously rather than sequentially?
And will you run your generator sequentially and change the settings on a single charger each time you switch banks? Or do you have 2 separate 120VAC chargers, one set up for each bank with the generator charging both banks simultaneously?