Basically made a really sturdy pergola and then mounted solar panels to it. Ran that wiring to the MPPT, batteries and inverter in the garage. Put in a new small breaker box right next to the existing one, which made it real easy to just grab the wires for the critical loads and run them over to the new panel.

No need to worry about backfeeding, as I said they're parallel electrical systems, so it's not possible.

Dedicated circuit(s) with a manual switch from mains to inverter, I’m guessing?

That's how one of the hospitals I worked at did it. Probably wasn't a manual switch though.

That's a very small system that won't power much at all. Additionally I don't recommend these "all in one" systems, as they're typically more expensive, not as good, nor are they modular or repairable. Those are really if you need a "mobile" system.

Those are neat for camping or if the power goes out for the afternoon. I use mine mostly for my telescope.

Serbia / Hungary. 

I was going to say California. We have constant outages — having grown up in blizzards and tornados I never imagined they wouldn’t be able to keep power on here. It’s bad, like I mean when there’s a little wind it’s probably not staying on.