Hey Jim, I like that tent setup, nice. The condensate issue will improve with improved (hotter, better drafting) stove performance, by pushing the condensate (as steam) up and out the chimney. Guess that's pretty obvious. Nice photos, and the one of the truck head-on with tent behind clearly shows the draft problem -- all those close in surrounding trees. Want to know the optimum height of the chimney?o) Make it a little taller than the close in trees. I'm thinking erect one of those telescoping radio/TV mast, guyed off of course, insulated chimney pipe strapped to the mast, if you want to experience the best an RMH has to offer. Using insulated double-wall stainless steel Class-A chimney pipe sections, this top notch setup shouldn't set you back much more than the cost of the tent itself!o)
Okay, maybe that's extreme, on to the second plan: add insulated chimney sections one at a time, inching the height up in stages (about 4 feet at a time) and testing for draft with each new addition, until you get the desired RMH performance. You'll know when it's right, firing the stove will result in all that blue barrel paint flashing off in a cloud of noxious stinking smoke, if it's not 1200° F. rated paint of course. After burning off my barrel, plus a bit of sanding, it was repainted with high temp 1200° F. woodstove paint. The high temperature paint is holding up very well, with exception for looking gray'ish at the very top of the barrel, only the horizontal portion. That hottest area easily hits 800° F. to 900° F.
Anyway, with the right chimney setup you'll get that mass warmed up in its current configuration.