I can respect that, but may i ask why?
Minus being tethered to either lipo or dual 18650's, it's far superior to the DNA40 and much more future proof, and you don't have to run it/use anywhere near 200 watts.
I run a .16 single @ 23.5watts @ 440f (50w .5 sec preheat) in an rda on my homebrew...