http://mwo.smurfy-net.de/mechlab#i=18&l=443e5cde75375e45f4a9d29e158b41938f02d3b6 It was my favorite build for a long time when the game start.
Last night I bought my RS(D-DC, D xp out) and tryed almost same version, but 4 LLas+1XSRM6. Its a total disappointment. Too hot, (separated left and right arm lasers fire) low damage in brawling. I died with deal 50-300 damage (With my d and D-DC was 300-700 usually)
Sorry but the heat penalty is fairly new (cpl of patches old) but it means that any build with more then 2 LLAS will suffer extra heat when fired simultaenously. It is not a recommended build I'm afraid. There are others more heat efficient now in the RS section. I am putting in two stars, though in honesty, this was a great build once.