thanks a lot for your reply Umaro as always.
The first mission I did end up using a sniper to take out a camera ahead of time and create an opportunity for the group to enter the grounds of the area we wanted disguised as a repair crew. The hacker intercepted the call and the face set it up. Anyway it was nice teamwork which paid off. Then we infiltrated inside the grounds and took out the stuff we needed to take out semi-covertly :p Bullets started flying when the guards spotted the troll haha.
The second mission was an investigation type mission into the disappearance of ork women. There was a decent amount of B&E, data searching and perception. Once we found the people doing it, infiltration was used to enter the building by myself and the face (go gecko tape gloves !). Once inside I made use of a mini drone that I decided to get myself, a fly spy mini drone (Is this a good drone ?). I used it to find the location of the guards and map out the patrol patterns they had. Lots of pistol fire here since ghouls made a surprise appearance and the BBEG of the place had some weird fire elemental summoning mojo. I cleared the place out with pistols with the aid of the face and hacker who decided to have fun with a chemical loaded squirt gun *lol*.
The third mission so far has been a search and rescue, we were contacted in the middle of the night to enter old tunnels that were found by a company building a research building. So far a *lot* of perception stuff inside the tunnels / cave system. Not much gun fire so far though. Though what there was has been one bullet combats since I seem to be rather good at nailing heads

Got me some alligator teeth and talons, now all I needs a knife.
So far, it would seem the group is a lot more covert ops oriented, making noise isn't our style so far. I've been looking at the Gauss Rifle though because I've spent karma to specialize into Assault Cannons in heavy weapons and in case it would be useful, I'd rather have it and not need it, than need it and not have it.

However getting it right now would cost me pretty much all my nuyen. Is it worth it ?
I'll look into the Attention Coprocessor though, as there's been a lot of perception checks.. I'm also using karma to boost it right now so.
Since we have a good face already in the group I've asked her nicely to help me out with things that she's good at and that I am not. Like negotiations or cons haha.
From what I've described does anything jump out at anyone for something I should look into ? Or maybe a suggestion as to what to buy ?