The 8Q is probably best suited to a sniper role, but why be so limited? I have had great matches with this build because of its ability to do decent damage at all ranges. The arm mounted dual LPLAS can also mess a light up if it thinks you are a defenseless PPC boat. Heat can be an issue if you don't chainfire or just slow your roll in a brawl, but o'man this thing is great at cutting limbs off.
I'd probably run this with a second ER LL instead of the PPC, which would let you put another ML in the head (head lasers are the best