This is a build I've been playing with a bit. Its kinda fun, decent at long range and enough to surprise anybody that gets close with an SRM shotgun blast to the face.
Check your armor value: the CT wasn't maxed out on the front. It looks like that you have a lot of SRM ammo to spare... IMHO, since this mech has huge hit boxes and is kinda squishy, I'll suggest you to put more emphasis on long range weapons. For this very reason, I would only carry 2 tons of SRM ammo (with maxed out ammo skills are worth 20 alfa strikes for a total of 240 SRM missiles and a grand total of 480 damage) and focus more on cooling and UAC2 ammo. Ultra AutoCannon 2, despite being hotter, can double tap and potentially double the output damage. Give this build a try too. You should try avoid brawling in the first place and focus only on one "kind" of range (either long or short, mixing is often a bad idea)... Anyway, if you ever run out of SRM ammo (you shouldn't), swap a UAC2 ton of ammo for a ton of SRM ammo.