Is this going to be more for missions or pvp? The ac itself looks good, I'll have to check the legs when I get home. Shotguns do good, as do pulse machine guns as only tanks really have great thermal resists. On the FCS, the fastest is also the longest range (can't think of name, 500range) but it's a little tricky to keep them in the lock zone. I have a friend running shotty/pulse machine-gun, moonlight or 50k pile-driver on the back, he tears people up as a super light CQCB. I'm not sure what his other weapon is. He's bipedal light btw.