BigDaddy- where do you plan to ride this machine when built?
i can't help you with the M800, but i know a lot about the Troytech style recumbent layout, having built and ridden one back when i was 20, lo some 43 years ago... i went to a muffler shop and had them bend a length of 3" x .062" wall tubing: the bottom bracket/pedals were about 6" lower than the Troytech, then up and over a 16" front wheel and then back down for a similarly angled layback seat to be about 6" off the road, then the frame bent up slightly such that two chainstays were welded straight back to the 26" rear wheel. the seat back was supported with a pair of bolt on aluminum tubes. the main tube was hole sawed to allow a headtube to be welded in at the appropriate angle above the front wheel. rather than Troytech's ridiculous looking long curved handlebars, i mounted a conventional cruiser bike handlebar on a pivot directly under the seat pointing up and a bit forward such that the bar ends perfectly aligned down low with my hands fighter jet style. two aluminum tie rods connected the bars to the fork just under the frame.
the thing cornered like it was on rails, and the braking was outstanding with just a rear brake in dry conditions and i never got around to adding a front brake. being all steel, it was sort of heavy but that was the prehistoric tech of the day... the big problem- climbing hills sucked, badly. all recumbents are lousy climbers. a point that is moot for ebikes!
which is why i'd scratch build another more sophisticated one in a heartbeat save for my original question. they're about the most dangerous vehicle you can dream up in traffic in terms of being seen by drivers- especially big pickup trucks. i've done a lot of risky things over the years, and riding that on the street was right up there...