Mine for most everything is:
SCAR-H + ACOG
Model 1887 + Akimbo
Semtex
Flash Grenades x2
Sleight of Hand Pro
Stopping Power Pro
Ninja Pro
Painkiller
and my Kill streaks are almost always:
[3] UAV
[5] Predator Missile
[7] Harrier Strike
Unless I am having a good day, which if I am, I will usually use:
[7] Harrier Strike
[9] Pavelow
[11] Chopper Gunner/AC130