[dad911]

10'-6 is minimal.

I have both, actually prefer the 4 post for most work, and jack off of the ramps. Most jobs are easier on my back this way.

4 post is an easier install, can sit on top of slab. Also easier to store a car, just drive it on, remove ramps, and press a button.

Looks like the garage door tracks are going to be in the way to open the door when a car is on lift. A 'decent' garage door contractor can replace with 'High tracks'

Both of mine are from Eagle Equipment.