Hmm like a beefy heavy. I think you should make use of the leftover ballistic slots when you can though, machineguns are actually pretty good combined with the LBX in 1 weapon group (you can afford wasting 2 MG ammo everytime you fire, and press it down while close for +2 DPS with extra internal crits. The heatsinks are a bit excessive, seeing that your only hot weapons are 1 LPL+ML combo. BAP for only 2 streaks is not necessary IMO, you won't be chasing an ECM spider to the end of the earth. However I guess it's personal preference and it's nice to use against D-DCs. 2t of ammo gives you 50 shots as well, which I don't see myself using effectively. My variation fixes the 'problems' I proposed. Also I upgrade to the XL375+1DHS I'm going to get, but you can also equip XL370+2DHS to test it for yourself: Large Lasers! LPL+ML short range combo:
Here is my take: A bit hotter and slower but more pinpoint-damage to open up cans faster for the Critcombo in the right Arm.