Come check my team @ http://www.twitch.tv/men_with_juggs
Its an interesting build but i went from 600k dps down to 190k with the sever/shield.
Mp7-8 is very easy. mp10 requires more kiting of small mobs to explode near the elites.
Even critting the primary mob at 300-500mil, it still takes awhile to kill the elites.