Video camera? That is going fun to watch afterwards. You do not have to be Clay Porter to make a good video. Funnily, videos rarely show how rough the track is and how easy it is to kill yourself. It look like it is again going to be some fun for the end of the season.
I looked at timetables and I cannot say exactly how the trains run as thetrainline.com does not allow me to check September timetable. Assuming that the trains run the same as in March, I would be arriving around 4pm on Friday and would need to depart on Monday around 11.30. It does look good, I hope it all goes according to plan.