Freelance Port of Par Low Slung Brake Van

Here is my freelance design of a 10 ton low slung brake van that could be used by the Port of Par locomotives.
It need to be extra low to travel under a low bridge underneath the GWR Cornish main line.
The cabin sit between the structural frames so there is no door on the sides. Instead, access is from the hinged roof panels.
The overall height is 88 inches and the average man is 72 inches.

Please let me know what you think, as I put a lot of effort into this design.
Thanks for the tips SleeperAgent1 and Steamking4468 (the-arc-minister.deviantart.co…)