Curt without any extension rail the camera is 30" from front to back. If I do anything close up I have a 375mm lens and that still keeps me at 28". I can add a rail if I want to to the back but I don't think I will need to. Yes it would make a great 11x14. I copied my design from an 11x14! My longest lens is a 24" so I'm good there. The geared movements were not that hard to do. After two previous camera builds it does get easier.
Yes, I can clime inside this one!