I just happened to read this thread after deciding to open Jerboa after months and I stumbled into this, I have been updating my stuff for the past 30’, thank you for making this post and making me aware of this issue! (Even though I’m 8 hours late)

Coming back to that after a year, this is what I did in the end, I managed to get an R630 one month before the prices skyrocketed and got 128GB of ram for 200€, I added an external PSU to power the 3.5" drives and a pcie to sas card, it 's working fine so far and uses way less energy than the other two systems combined.