Yes!
I have finally found a 2nd hand motherboard that works, PCIe port included, in my town and at decent price!
Well, this time it had not one... but two bent pins. Luckily putting them back in place did the trick! 
This Asus Z97I-Plus motherboard (the same I have into my MiniCube build) has a 1150 socket, so I am glad I have a compatible CPU at hand, an i5 4590. Its TDP of 84W should be a good start to test my cooling concept. If the latter works fine, I then plan to raise the voltage to get higher wattage levels.
The PSU little 3D print brackets are here also and they look sturdy enough to keep the PSU from moving. I am a little disappointed with their colour as the dark grey I had ask for is finally a light one as you can see above. Not a big concern though...
Looking at the fans now, I think I will go with some Gentle Typhoons as I have always wanted to see and hear how these well known fans perform. Debating wether to buy the 2150RPM or the 1850RPM, I will probably get the latter.
Waiting for some drill bits to arrive and I should be able to go forward and show you new pics!
Prototype post updated.
