BoscoBear

Microinverters can make this pretty easy if you are going to be grid tied. They are worth learning about.

If you are going to use batteries and not be grid tied you might look into microgrids or maybe community grids.

If it were me and I understand correctly I would probably not tie the systems together.

Harbor freight has sets of tamper resistant bits. They are also handy for regular Allen and torx heads.

I have been talking to a friend who lives in a mobile home near Albuquerque. He is thinking about installing a roof above the home to keep it a little cooler in the summer. To that end I am recommending he use decommissioned panels as the roof and connecting them through a transfer switch to a mini split ac. This has the advantage of using cheap panels from Santan solar (which cannot be grid tied) for free cooling during the hotest hours of the day, while retaining the ability to run the ac at night.