Nice, and you are a braver person than me. I really liked the reverse manual valve bodies that I've had, but have never been brave enough to install them myself. Well done.
I'm cheap. I hate paying people to do stuff. Sometimes to my detriment.
What was stopping you from running it on the inside of the frame away from the floor? That screams melted wife shoes in my mind
You could apply some header wrap to the section close to the floorboard to keep it from getting too hot.