Hermes, it must be nice to have a facility like that to yourself for training and video analysis. That is surprisingly good video from a cell phone. (Yes, I know it's not just any cell phone.) You make one point which is one of my biggest interests in getting a power meter; finding the sweet spot for TT position versus power.
I may go on an easy and flat ride on my TT bike tonight as I'm still recovering from my weight loss episode.