I call this Scarface because it has so many little friends... Say hello to my little friends!!!! Never alpha on this because it will automatically shut you down... on hot maps you can explode so watch your heat... I would recommend group firing the weapons, left arm, right arm then torso...
I built this for fun last night. I quickly made a minor change. I dropped ONE cSPL and DHS to upgrade the TC Mk.1 to a Mk.3 to maximize the additional range for the Small Pulse Lasers. It bumps the range up to 189m. Dropping ONE cSPL also lets you add Lower Arm Actuators which can be quite useful for precise aiming. OR you can drop the Head mounted energy and keep all 6 in the right arm, this way you can remove a -3% penalty to duration and cooldown. Here are the stats of all the minor tweeks, 18v19 dhs as well as the -24% vs -27% quirks. I also included your original 13 cSPL version. You can note the difference between TC1 and TC3 as well. The stats don't include Ghost Heat from firing 7 SPL, so the sustained DPS of the last build (on the far right) is a little lower than displayed (assuming you fire 6x7 or Left/Right grouped) Based on this, the best combination of MAX and Sustained DPS would be the fourth build (second from right) that had 12 cSPL, 19 DHS, and a TC1. However, this build would have a spare 1 ton and there is nothing else to spend it on that really benefits the build. Overall, I'd personally stick with one of the two builds I recommended above because the TC3 gives you a minor range boost as well as a more important Crit chance modifier. It's the most effective use of tonnage.
I decided to tweak it again. Dropped a few SPL and took a near max Targeting Computer (Lvl 6) for the biggest crit modifier I could take realistically. I've only had a couple matches in the build, but I can already tell it's absolutely devastating to mechs with open components. Truthfully, trading raw damage of more SPLas for a greater CHANCE to do crit damage (+15% per crit) probably isn't worth it. You drop 25% raw DPS to gain a +3% crit chance (difference between the other build's TC3 and a TC6, very small i know...). But, you also get a 2% range increase, meh. It grants an additional 25% target info gathering speed though which is very useful to get your first shots targeting a weak component. The side effect of doing this and putting all weapon in the arms is you have lower arm actuators for superior aim, and much less negative duration and cooldown by dropping the torso and head energy hardpoints. You also gain positive torso twist speed and twist angle by taking the onmipods with no hardpoints at all. You can alpha strike all 9 SPL for only an additional 10 heat, producing a total of 37 heat out of a 75 heat cap. So you should be able to alpha twice considering the cooldown and heat dissipation between shots. Otherwise, you can easily split fire each arm to avoid ghost heat entirely. Worth it? not sure yet... probably not.
Here's some sauce of this thing in glorious battle. It's a chainsaw. 10/10 would invade home planet with.