Good luck with the Dolomite build!
I considered getting one. I got a Beast first, and I was evaluating it, trying to decide whether I wanted to convert it, when the Dolomite came out. I figured picking up a Dolomite would be better than trying to put brakes on the Beast. The Beast has a rear coaster brake only. Also, the Beast has two problems that have been documented elsewhere that I hope were fixed for the Dolomite. First, the Beast is short, so many feel cramped on it, but more importantly, people's toes hit the front tire when the handlebars are turned a moderate amount. This was kind of annoying and could be dangerous. Also, something about the geometry makes the front feel floppy when turning at low speeds. It might be something that could be gotten used to, but it was a little disconcerting. At higher speeds in a straight line it wasn't bad, but with only a coaster brake, I didn't test this much.
Sorry if the Beast talk was off topic, but I'm curious whether these issues were fixed for the Dolomite.
Again off topic maybe, but I've been spending some time on a Pedego Trail Tracker (production fat tire e-bike), and it's great! I haven't taken it on trails yet, let alone snow or sand, but it's a blast on the street! If anyone is considering a fat tire e-bike and can deal with the lower efficiency, I highly recommend them.