'Tis no probs. We all want more Hexus presence at these LANs
If you want smaller, try going for a laptop. So long as it runs the most played games (CoD4, L4D being two of the main ones) then it's fine. (You'd need a wired mouse too though, they prefer not to have wireless due to potential interference problems between other comps with wireless mice)
EDIT: Or \/ that option works too