ok so i have forgotten about this thread, but i am back, been a bit busy, it seems that my PSU works fine without a load across the 5v rail, this is a good thing, i havent put it through much testing but things do look pretty stable from my line of sight of course... though I have noticed that there is a +/-0.5v difference between having the psu fan plugged in and not having it plugged in, I have also noticed that the PSU fan though it is rated at 12V 0.3A operates at 5V off the psu main board. The PSU has a standby light on the back of it, this light is always on if all things are good (of course it blinks once when the PSU gets turned on) if something is seriously wrong (such as no load on the 5v) power will still feed out the rails but the light will not be on, of course another a different issue with the PSU will cause the Light on the back to rapidly blink, at a fairly slow rate, being off for say 80% and on for 20% of the time.
The variable rail, i could do off a completely separate transformer (16-0-16) that wont be a problem, not that i really need the -12v rail much anyways.
All I have to do is locate a proper sized enclosure for everything to sit in, anyone know of a good supplier for abs project boxes?