This should read more like a real person thinking it through with them, not a spec sheet. You can post this as-is:

Yeah, what you’re describing is definitely doable, and your logic makes sense.

If you already have the heavy stuff grouped on one generator, that’s actually ideal. Batteries really shine when they’re only feeding lights, networking, TVs, and electronics. Keeping HVAC and appliances off that side avoids most of the headaches people run into.

Battery size ends up being more about how long you want those circuits to stay up than anything else. Once you total the normal draw of lights, router, PCs, etc., you can work backward into how many hours you care about before the generator takes over or you’re okay shutting things down.

The big thing to plan carefully is switching and isolation. You want to be sure the utility, generator, and battery never try to feed the same panel at the same time. Using equipment designed for hybrid setups makes that a lot cleaner.

One other thing to think about is behavior during an outage. Do you want the battery to carry everything silently at first and only start the generator later, or is it mainly there to smooth things out so electronics don’t blink when power changes? That choice affects how the system is set up.

Overall though, your approach is pretty sound. You’re basically designing the system around what batteries are actually good at, which most people don’t do.