I run that kind of set up on my Flame and Blackjack. Very effective. I'd drop a heatsink or two and max the armor--you need full armor on arms and torso areas. Min 30 or so on each leg. To use the case, you need the ammo in the same area, so move the ammo into the left torso. Add endo and you can really get the ammo and armor up there, plus a bit more engine.

Something like this:
JM6-S


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