Some internal pics after some work this weekend.
Need to fix the cables, but im satisfied due to the lack of space

Used a Cooler Master Seidon 120v for cooling in this one.
Side view, not alot of space but enough for motherboard, a 2TB drive and a SSD, a 120mm radiator and all cables.
Using a Be Quiet SFX PSU
My custom side panel turned out good
PSU mounted above the motherboard
If i do another one of theese, i´ll cut a hole in the floor for PSU and put one more fan in the roof, this may be to hot. We´ll see after some testing.
Inside gut of the Prodigy Mini, testing the hardware and installing windows right now.
Cable management its not much room for, but some hide away i think i need to fix