It sounds pretty good
Better would be Crimson Rapture,Abomination,Magma,Desolation,but that’s still not the best one either.
Another idea would be Crimson,Sorrow,Magma and whatever heat top weapon (plus Rolling Beasts for mobility),even a Reckoning,Abomination and whatever other combo (but that would be a little heavier).
Builds like the Rocket King are usually the strongest or those that pack 3xMagma and something else.
Anyways,there are a lot of possibilities to make a heater if you have L-M’s.
You can make some pretty solid ones even with free-players items.
Here are a couple:
Dual CL (or CL and Savagery),Terror cry,either Vandal Rage (for a mass heat oriented build) or Deso/Supreme.
Or CL,Deso,Supreme,either Repulser (plus more hp) or Terror Cry (the f2p alternative to the Rocket King).
I doubt he has any heat L-M items…
I think he would have put them on his builds if he would have.
(Also,thanks for summoning me;now even the master builed Metre made his way here so feel free to ask him too )