http://mech.nav-alpha.com/#v8NBPH_FLE-FA With those sweet armor quirks this is the build I would run on the Fire Ant, Out maneuver the enemy and eat their components. Click the above link for build.
5/5, I prefer MGs to LMGs here. Originally I ran regular SLs to run perfect heat, but found I wanted a little more range. I didn't want to take the damage hit since I find that most of the times that I want my MGs, I'm inside the regular MG range and don't take advantage of the LMG's range. I also run with SHS since its already cold as ice. That lets me take FF instead of LFF for a little more armor.