I would probably loose a heat sink and 2 points of armor (1 on each leg) and add an AMS plus a ton of ammo in the CT. That leaves you with a Cool. Eff. of 37%. You'll have to watch the heat on this build anyway. I'm running a Treb with 3 MPLAS and 40% CE, and I have to take it slow after a few rounds of ML fire. At close range, this mech is probably quiet mean.