Have you thought about trying a regulated device? .7Ω on a freshly charged battery assuming no voltage drop is pushing about 25 watts... You can find a DNA30 device for fairly cheap now, or if you wanted something with more power just in case there are 100w+ regulated devices for <$100.
Just throwing this out there since safety seems to be a concern

It'd also help that 13+ wrap dual coil heat up a lot quicker too

I have a God 180 mod that I have to build .5Ω+ for (I'm used to building .1-.2) that took a 20 wrap dual coil (Well, 10 wrap quad coil in series & parallel, but that's just because I bend the coils in half so they fit in the RDA & the MXv2's airflow). At the full 180w, the ramp up time really wasn't bad and the flavor and vapor were stunning, comparable to a ~.08Ω build on a mech with a fresh battery but a whole lot safer
