Level 9 Boiler, 147,456 SU
THIS SCHEMATIC REQUIRES THE CREATE CRAFTS & ADDITIONS MOD/ADDON FOR CREATE https://beta.curseforge.com/minecraft/mc-mods/createaddition
An issue I encountered was that using the schematicannon, the boiler would build strange. I fixed it by just removing and replacing a tank, however you might want to set the cannon to ignore missing blocks and instead place the tanks by hand. Up to you. You also need to hand place the water and lava. All blocks above dripstone need to be a lava source block.
Simple quick and efficient boiler, good for even early game (as long as you get enough copper and find a blaze spawner KEKW).
If it is not level 9, let the lava collect for a little while before starting the boiler.
If you are running on a server with inconsistent TPS, add more cauldrons since they fill lava based on tick rate.