Heat is not your friend here. The mech works very well at all ranges, but, very differently. Long Range, stick to the LRMs - if you mount the Quick Fire module for LRM15, you get a great rate of fire out of them. Add in the PPC when you can. Close up, switch to your Medium Lasers & Tag, its enough to do damage to those lights that think they have found an easy lunch. between 200 and 500 meters is the sweet spot, and is you heat problem. ML, PPC and LRMs will have you overheating in 2-3 alphas - you have to pick. Assaults and slow Heavies get the PPC and LRM treatment, Everything else, ML and chain the LRMs. With so many ECM mech around, the combo of Tag & PPC works really well. With the Tag you can track lights at a distance and with the PPC, you can uncover everything else. I did try a Narc & LRM20 version - rate of fire was too slow / DPS to low. BTW, 60 Pt alpha at 180-300m is nice to have on a ECM Mech. One shotted a few mediums with this build.