There are many "Lavatube" brands. Good idea to get the info first as you seem to be doing. I have a starfire which is just a different name for a LT. If you do want to use a dual coil setup you can do it on the Starfire if it is a big thing to u. Persoanlly I won't ever use one myself but figured I get one that could handle it just incase I did want to try it. There is a new version of the LT coming out soon as well that has a 3.9 amp cutoff. Can't remebr but I know there is a place that does currently sell em. As for my setup I use the Starfire with my Vivi Nova @ 2.8ohms and love it. The kit I got was a pretty good one imo. Comes with 2 batts, carring case, tube, charger and 5 cartos oh and the starfire has a 3 amp cutoff, if that is something that matters to you personally. Below is a link to where I got mine...
Starfire VV
Good luck to ya and happy vap'n!