Those 10 motherboards I'd list one at a time, as if it's the only one in the whole wide world, then soon as it sells, list another one ; )
It aint hard to test stuff like that, even without a case, long as you have a power supply. You can hook everything up loose, laying out on the desk, just use a couple wires with alligator clips to the PS and mobo, floppy etc, for the ground. I used to use a picture of one sprawled out like that for my profile titled it "new build"