Good utilization of space. You are maxxing yours out!
I am vehicle and trailer heavy at this point and have been considering getting a 75 inch rail to connect with a 55 so that I can carry rails in a 6.5 foot bed and occassionally downsize the vehicle size. Sorry Shane, that doesn't mean that I am doubling up on my tools!
If others read this post, remember when planning for rail lengths, if you can store them diagonally some way, they may fit. Unfortunately carpenters all too often think in parallel and perpendicular and not in 3D space or in diagonals. A spot that is often overlooked is the ceiling of a van, a truck cap, etc., or a sidewall where a false back could be constructed
Just thoughts for other situations.