It all depends on the way you play. If you rush I would recommend using..
Either the MPL or AK74u with rapid fire.
Steady Aim Pro since you are rushing.
Tactical Mask Pro. It protects you from stun and flash grenades. Really usefull. But it is a B to get. Haha.
If you are strategically defending a location, or camping for short, useeee:
The Commando or Famas with Dual Mag.
Sleight of Hand.
Tactical Mask Pro or Hacker, your choice.
The killstreaks I would recommend for you would be Spy Plane, Blackbird, and Chopper Gunner or Gunship.
If you are a PS3 gamer, add me and I will explain better. My id is Harrywhat.
8th Prestige and KD of 2.10.