You should throw some cheap used video cards into the video editing PC and run 6 monitors. Any serious video editor needs atleast 6 monitors the more the better.
Trust me once you go multi-monitor you don't go back
I cannot believe you got a 8 port KVM switch as well what a score, i hope you picked up the cables as well because they always sell on Ebay easy enough. I use a Belkin OmniView Matrix 2x8 (16) model F1D208-OSD and it is rock solid reliable, I always have at least :-+5 computers hooked upto mine with a spare cable for connection to the computer I'm repairing.
Dave, if you still have the cables going to the LED panel (one thin one and one white ribbon one) I am in need of these to fix another monitor I picked up for scrap. Any idea how much you'd want for them, including postage to the UK?