so i decided to take the plunge and pick up some rba's, i order an phoenix clone and a chobra , both from discountvapers.com who was awesome on shipping and price btw, thanks so much. on my first go around on the chobra i managed a 2.3 ohm coil and a 2.6 on the phoenix, being new to these my question is.... are these sufficient coils for both of these rba's and what kind of voltage should i be aiming for?