You should probably build for a mech more like this one:
Since Sorrow doesn't reduce the heat capacity of the opponent's mech as much as Corrupt Light/Flaminator, I would consider it worst than Corrupt Light/Flaminator.
You should also use a Common Teleporter simply because it takes less energy. You're probably not worried about the damage on a heat mech.
It'll work without energy? What? Doesn't Flaminator exist so you can do heat damage with a lot of energy?