The title reads 5 man mixed comp, 5 man makes me think of pve/heroics, but maybe I'm wrong. I wouldn't recommend 5 boxing random BGs unless your toons are really well geared, gear seems more important than ever. I took my team into AB with blue pvp sets and was rocked and slightly embarrassed. I am not good enough yet to pull my weight, so I don't try, maybe one day. If you do want a pvp mixed team, I.. Wouldn't do it, and can't offer any advice except have fun, but help your team win, don't give us 5 boxers a bad rep.