I’m not a coach, so I won’t go into too much detail into all the aspects of your plan. I also haven’t attempted a run of this magnitude either so kudos to you!
My understanding of the ME workouts is that they should be utilised on top of a strong layer of aerobic base fitness, so these are something that tend to be incorporated after you have developed your aerobic base. The plans in the UA catalogue that use these workouts tend to expect minimum levels of aerobic fitness in order to utilise them effectively and make the most out of them.
Secondly, doing a run and a hike on the same day of the ME workout seems like (a) far too much volume and (b) the muscular fatigue you will have going into the ME workout will limit how much you get out of it. I have generally found for myself that doing the ME workout and then a recovery run later in the day works best, and even, my legs are usually blasted for a couple of days after.
Thirdly, doing the ME workouts and the ChamFit workouts is not something I have personally experienced before (and I would be interested to hear from other uphill athletes who have) but I suspect that the ChamFit workouts are probably a helpful precursor to the ME workouts to improve your stability and balance. So you might want to consider using the ChamFit workouts as part of your base training to then build up to doing the ME workouts and setting aside sufficient time to make the most of them.
I hope these ramblings are helpful and best of luck!