Is this too jank? Laptop, TB hub and external drives

I'm interested in a homelab/nas, I've got an old notebook with 8gb of soldered ram and a 10th gen i5 that's not woth selling and is aging out of its useful life due to RAM bloat of microslop software. Also I'm poor, well not really but don't have money to spend on this as a first iteration.

My janky idea is, to have a UPS designed for CCTV with 45w PD output go into a thunderbolt 3 hub with 5+ external drives attached and then the laptop powered through the hub.

I have a couple of 3gb external HDDs already and would look at using unraid or raid 6​ depending on total storage I think I need. I'd want to use a homelab friendly distro like unraid to run jellyfin and immich or similar. Oh and I'd set the TDP of the laptop CPU to like 30w so there was about 3w per drive of power supply (laptop still has internal battery to cope with heavy drive energy draw limiting supply).​​

Am I insane, will I lose all data immediately? This feels like it should work but I'm ​worried I'm at the peak of the Dunning Kruger curve and know just enough to be dangerous. ​​