Damn... that's quite a project. What is the driving force for a project like that? Are you experiencing bottlenecks somewhere on your network?
I've been in the industry for nearly 11 years, and have not yet had a request for a 10GbE network, outside of an aggregation switch in a datacenter build. A buddy of mine works for a large manufacturer, and he told me of one customer who was actually looking for 10GbE connections for his endpoints. Endpoints just don't usually require more than 1GbE for the vast majority of applications, not to mention a lack of 10GbE NICs outside of servers and such, which would usually connect through SFP+.
Ubiquiti has a 24-port 10GbE switch, but i've never sold it:
https://store.ui.com/us/en/collections/unifi-switching-enterprise-10-gbps-ethernet. But honestly, you're getting into some intense data at that level, and I would never quote Ubiquiti for a solution like that. If you're doing that much data transferring, then your network and routing configurations are just as, if not more important than the throughput of your connections.
If you are doing a project like this, I see no reason you would need to run fiber in a home. The only times a company i've worked with needed fiber to devices is when there are flame cutting machines, and other devices like them, that create a high amount of RF and electrical interference. Aside from that situation, cat6A should be just fine and less of a pain.
Honestly, I don't see why the Enterprise model with 2.5GbE per port wouldn't be enough for your needs:
https://store.ui.com/us/en/collections/unifi-switching-enterprise-power-over-ethernet/products/usw-enterprise-24-poe. Those would at least help your U7 APs get that 2.5GbE back to the network. You would still run the cat6A to all your drop locations, and could invest in a 10GbE switch in 10 years when there may actually be a need for it (maybe).
As for the U7, I haven't actually sold a single WiFi 7 AP at this point. I'm still selling WiFi 6 because the market hasn't really needed WiFi7. I would consider it "bleeding edge" right now, and probably won't be entering that world at least until the end of the year. According to specs, it can theoretically hit speeds up to 40Gbps on the 6Ghz band, but I would like to see that first. Even so, you still need a device that supports WiFi 7. And even if it does, i'm sure the hardware connected to the wifi will throttle that total speed down.
I just don't see what you could be streaming off your NAS or Dell r720 that requires more than 2.5Gbps. Where a 10GbE uplink comes into play is when you have a server that 20 or more employees are constantly reading and writing data from.
If you are streaming 4K video from your NAS, you would never really exceed 80Mbps per stream. Honestly, the bottleneck there would be the performance of the NAS itself.