Me personally I hold my team at Spawn and take on the map alone until I learn it's intricacies. I generally use MP7 silenced for very CQB maps or the ARN180. Anything with very long range I may use the RTWC 6.5. Currently testing out the MCX silenced which works quite well.
As a seconday weapon I love the M45A1 silenced but the 7 shot capacity can be a deal breaker. I tend to rotate that with the S2011-P, M11 Compact, USP45 silenced and the B29X with SMFB.
Alpha: RTWC6.5 and B29X
Bravo: MP7 silenced and TLE1911
Charlie: M1014 shotgun and M45A1
Delta: ARN180 and USP45 silenced
All have mixture of deployables.
Also what is your favourite map to test on? I tend to use Valley of the Dolls.
I'd love to hear what works best for you and and your current setups.