my shop (50' x 50') has a 10' 4" ceiling. I had to install a shorter (9') two post lift.
I would suggest a 12' ceiling as a minimum.
I have 9' x 7' roll up doors. Three of them.
I suggest 10' x 8' or 9'.
A real car guy need a 100' x 400' shop to play in
Dwight