That protek PSU sure is a nice pice of equipment.
But if you don't need all those ports, the usb charger and 520W of power.
You may, since you are within the EU now, want to take a look at
this PSU.
I got one myself a short while ago and I love it. Not 520W but still 300W, output voltage can be regulated, 2 ports and 110/240V AC capable.
Only downside is, demand for this thing is very high, so you probably would have to preorder it to have a chance.