Quite the critera. The problem with objective criteria like that is fairly often it doesnt tell you much. I'm a pretty good player, however because i usually prefer to play in smaller games (partly because my labtop cant handle really big ones) i can count the number of 100 kill games i've had on one hand.
I'd recommend a more subjective criteria, test your applicants in small matches observed by several members of your clan (this is how T.T.O recruits). Spec the new player yourself and see how they play. Observe their techniques, strategies, map knowledge, and pure skill.