That's a cool system and it's doing the job of saving you money and dealing with outages. Our usage is different as we have no A/C, but we do charge up the EV now and then. We are still saving a lot over before the panels and we didn't have the EV then. I would think that in places like Florida it ought to be standard to have solar. You will get a lot more sun than us and you will use more power.
Shine on!
Yes, the backup batteries were by far the most expensive part of our system. Way over half the cost, I'm sure. I know several folks with just the panels for savings and "normal" use that do great.