actually, quad x-fire has the capabilities to run 3x 1600p monitors. Take a look at CallsignVega on youtube (he might be on this forum, not sure). He runs 3x shimian 120hz at 3/5 way portrait. At least he did.
But assuming money is no issue, quad crossfire is fine for what you are doing. Desk wise, i would try the Ikea Galant series. Their confrence table is ginormous, but it should do the job. Keep in mind i do not have it, but i have seen it and it makes a 30 inch monitor look like a 24 inch monitor.
Good luck, and post pictures.