I decided to keep it simple with this build. The 4 Lasers on the right side give you the possibility for fast alphas around corners, with the drawback that you can lose your main weapons quite easily of you are not cautious enough. The Mlas is just for some zombie action.
I rather hate unbalanced builds like this. My 8Q's almost the same, aside from having the LLas split between the two torsos (and a small laser instead of medium- less heat, and saves some weight since it's a grind 'mech for Elite). This allows me a decent punch from either side, plus means my firepower's only halved, not gone, if I lose one of my side torsos.
I agree with Anvildude about not mounting all you ammos on the right side, but it's only minor tweak. My grudge against this build, though it's certainly good to grind the variant, is that a Stalker with similar loadout and speed, even if it's slightly less manoeuvrable, will be way less vulnerable (in particular when sniping over a ridge) and also more heat efficient:
Of course you are right, its not a stalker, which is certainly the best chassis for 4 Llas. But since I needed this variant to master the 9M, I tried a lot of loadouts, and this one works best for me.