There's a video of Owens Aviation showcasing a Scout with pretty good detail. They show the baggage extension, not full cabin height and width, more like a ski extension in the trunk of a BMW. With the battery on the firewall you are probably nose heavy, especially if you still have that "old school" starter, so some weight in the back will be ok.
Video:
Like A1 Skinner (David) says, put the baggage door on at the same time. AC says they can even install it in an already covered airplane without a lot of disruption. Metal belly too while you have it stripped.