Might as well replace the entire post since it's all irrelevant now.
My psu is here, and I got it going, it's working fine, I had a bit of a fight with it because my mobo has a 24 pin connector AS WELL as one of those 4pin molex ones that power the CPU, and it seemed as though the new psu didn't have a cable for that. I expected it to be in with the L shaped connectors but it was actually among the yellow (pci-e) connectors which seems weird, but oh well, who cares?
The hard part is finished
Now let's hope the video card FITS in my case.
Also, my wires are a mess, there are a LOTTTTTTTT more wires on this new psu than my old one so I can't even keep it tidy in there. Will this affect my performance? ie. my temperatures. Or is it just an aesthetic thing to be more professional (like having vertical screws in the face plate of a lightswitch)?