It is an interesting build for sure, I use Trail of cinders for most of the dmg i do, the main draw back is against elites with the reflect dmg affix. if not paying attention it is very easy to take yourself out with this skill.
I'm very close to getting into interno and would definetly appriciate going at it with somebody, I'm playing DH Glass Cannon build right now. with ~42k dps in Hell: act 4. Gamer tag is Imphugpolkaf#1431
P.S. thanks for the great events and community.