If you are going to go Mech, and start building your own coils, I'd recommend getting an Evolv Kick 2, to start off with. The kick 2 will make a regulated mod out a Mechanical, and allow you builds from .5-3 ohms, and able to crank it up to 15 watts. It will also give you all the protection of a regulated mod. Then once you are proficient in builds, and want to try sub ohms, and have a good understanding of battery requirements, then can always un kick it and get into 30+ watts of vaping.
Mechs are great, love them, but I still use my Provari on a regular basis, some atomizers aren't suited for sub ohm builds, so the Provari fires them. One really needs to understand what they are getting into before venturing into the world of Mechs.