Interesting ideas: Curtained loft storage above low-ceiling changing room and closet space, ceiling grid for lighting equipment, wall mounted storage. Again with the large side windows for indirect natural light.
Small fold-able tripod dolly. To make movies you usually need to move smoothly your camera on a flat surface, like a table or the floor. There are many commercial tripod dollies but you can easily make your own with a few wood boards and three wheels.
21 Hacks To Help You Organize Your Art Studio In 2015