A FiveMega double 26650 host would give good heat management and runtimes
I'm partial to TNC lights.
And if you wanted the ultimate, you can get a copper 26650 host, with an extension to run 2 cells from TNC. That's my plan once I finally get a V5 drop in. I'm running E series V5 with 2 18350s, but the runtime on max leaves something to be desired
Another option (single cell only though) is a FiveMega cooly