I'm restarting a project that I started a while ago, and then ran out of money. The current plan is to end up with a multi-use home server using an ethernet switch, two powered USB hard drives and six Raspberry Pi 3 B+, all housed in a old VCR case.
I'm trying to work out the best way to power it all. I've seen a few people use ATX PSUs. Due to my size limitation, I was thinking about using a TFX PSU (maybe this one: https://www.amazon.co.uk/gp/product/B00I607LG2/) which I believe should be able to power the six Pis, the two hard drives and the ethernet switch without too much trouble.
Do you think a TFX PSU is a good option for me?
Do you think the alterations I'd need to make to the TFX are a) safe and b) within the abilities of someone with little hardware experience, but who's willing to learn?