Well, dual 1.8 ohm coils, if each is that resistance, will get you .9 ohm, which is good and safe IMO, and your mech is a good one, I'm not familiar with the batteries not having used them. If you are building with an ohms target I assume you have the means to check your ohms on your builds, and so far it sounds good. You may have a bit of a wait with Fastech though.... they aren't that fast.