Yes, it will be too low. I use 28g on my nimbus with 7/8 wraps and duals come out to .9 (microcoils). However, try a single 8 wrap with that wire and see if you like it. That's around 1.4, 1.5 and it works fine on my SVD. The stock airflow holes on the nimbus are pretty small, so if you're going to do dual coils at sub ohms, you'll want to drill them out to get enough airflow to keep 'em cool.
Vape on!