I've been playing some more... more assault sniper working on running at the back of the squad and working as a spawn point. I've played a couple of "squad death matches" and my team loved me.
Here's the kit setup.
T88 Sniper - 3 Shot kill - working with team mates means some good assists.
4x scope - At the short and medium distances this is really worthwhile. Sometimes un-scoped up close it just as good. Due to the amount of ammo you get in a magazine...