How is this possible? Are entire setup sans batteries was ~$700. Maybe you have a considerable amount of panels, but those seem to be the cheap part.
I did it this way and wish I had just used solar in the first place. We’ve only started our generator lately to make sure it still runs and to keep the engine from seizing.
As far as the isolator, I actually disconnect that a lot. As we use the battery doctor, it disconnects when the charge on the starter battery drops below 13.7v or something like that. With the solar on during the day, that never happens so the solar ends up charging three batteries not two and at this point I assume that my devices would actually pull power from all three batteries? Not sure on that last part honestly. Regardless I keep it disconnected unless we’ve been parked in the shade and need it to charge up.
On the subject of fridges, still super happy that we dropped the money the Dometic CFX3 75DZ. It’s only pulling ~1.3 amps and having a freezer, ice on hand and not having to worry about it melting is a game changer. Cocktails have become a thing again. So have being able to keep leftovers and the like. I highly recommend it at this point.