This is my current loadout for the 3F since Streaks where nerfed near to oblivion. As the Stalkers are too slow to play the role of an Hammer, this was named the Anvil for being the counterpart of a good flanking maneuver of faster mechs. The build combines nice firepower for nearly all ranges and the relative high agility of the 3F variant with good protection including AMS and reasonable heat efficiency, all powered by a STD 300.
Great build! I been using it for a bit and am having good results. Here is a modification I'm considering. I find heating is not a problem so taking one less DHS and a little less speed for more firepower seems like a good trade off.