Some lovely gun suggestions. I like the sound of DMR a lot. As in total, it should be 4 or 5 of us going together, 4 of us did it together 12 years ago! The fifth is my partner, she's keen on joining in from time to time.
So, the 4 of us, we compliment each other fairly well, 2 AEG's me as DMR and possible one with sniper or AEG depending on the feel of the day.
I think I will likely invest in something like a SMG for up close.