Night team with Groza

Depends, is it for night or day?
9A-91 is sub par outside of night battles due to poor stats and skill modifier, and you don't want to replace an AR with a HG, usually you replace the main SMG tank.

It's obviously night, seeing as there are two night ARs and a HG.
It looks fairly standard for a AR/HG/SMG echelon, and buffs are well placed. If you have UMP45 it may be better, but it's more of personal preference.

I'd say go for it.