I use this mech a lot, but I run it a bit different. I am a huge fan of spreading weapons out and having usable arms. MAX armor everywhere but the head. Ferro Fiberous XL180 SNPPCx2 One in each arm Double Heat sink x3 GECM JJx2 Skills Max range 1/2 Cooldown and Heat Gen Max Armor nodes. All ECM nodes All Cool Run and Heat Cont nodes. I average about 800 dmg and 3 kills per game.
I have played hundreds of games in urbies, and while I think the 5 mpl K9 is my favorite, this one is a very close second (and might actually be the "better" build). I drop the medium laser entirely, as it doesn't contribute very much to the build's alpha and is kind of cumbersome to use with ppcs, and is a pretty heavy detriment to the build's sustained dps (replace it with a heat sink), which I believe to be it's strong suit. Max speed tweak gets you up to 105 kph, and I also invest the remaining points into JJ vertical and vectoring to taste. A note - I don't think spending the skill points on velocity is very useful, as you want to be pretty close and personal anyways. The 5 points are better spent elsewhere. This build can hunt enemy light snipers with ease, and has formidable and lasting sustained dps against big and fat targets.