I think you have it pretty much correct, but I don't know the details of playing MRD since mine is only L25. I suppose you would spam the 1000TP skills instead of using Storm's Path if you wanted to do single-target damage, although many of those can also be conal AoE if you're Steadfast when you use them. As far as gear goes I've seen many successful MRDs playing with the cobalt hauby set, and many running around in red plate mail. Based on the differences between them, I would think the plate mail or sentinel's set would be better for tanking and you might want to go with the hauby or even maybe the rainmaker's set to boost damage if you want to DD, but I spend most of my time fighting in robes, so I may not really know what I'm talking about.