You really dont have to use a power strip, just tie the wires together and solder, or use wire nuts, or a terminal strip. You could use a small relay like the one I used on Stevies Jukebox, to switch monitor and speakers on.
As far as audio outs and USB ports, Im sure you can get those already wired, just plug and go.
I dont like the idea of hacking the power supply either, simply because when the power supply fails it might be a pain to put in a new one.
On Stevies jukebox, I exhausted the fan output of the power supply through a cutout in the back of the cab. Then I used a low profile 90 degree 120 volt cord to plug into the power supply outside the cab.
But Ive got a different idea for my next juke.