Anybody towing 36', 9000lb TT with F150 HD payload ecoboost

Also look at your calculations while considering the length of your trailer. That is a fairly long trailer. How well will you handle crosswinds? If your specs are pushing the limits then a crosswind might make for an unpleasant, and maybe an unsafe trip. I too like to over-engineer a bit.

Also, you are relying heavily on some newer technologies that are not yet well proven. I would temper my expectations a bit to allow for any possible shortcomings.