[Danimal16]

I have a 12'-6" ceiling in mine, it is the best option going if you are building new.

Make sure adequate depth on the footprint, use a Suburban as a guide for depth, plus accommodations for cabinets.

Use side mount door openers.

With a high ceiling, install high lift doors. If not, the door will interfere with your lift. You do move some of the open/above door storage further back in the garage with consideration of the car on the lift.

Make provisions for thick lift foundations. Not just a pier type foundation, but rather a footing that is rectangular to allow for moving the columns for a two post. Four posts do not necessarily have to be anchored to the ground and can be moved with a caster kit, just like portable scissor lifts.

The layout of your electrical is very important. Dedicated circuits for the lift/lifts, various lift positions if using portable lifts and for door openers and lighting. Consider upsizing wire for 220 on lift; separate lighting and door power.

I am not a big fan of of scissors lifts, having had one. I would go with a two post with adapters to store cars. In a perfect world, I would go with both a four post for storage (if the ceiling is extra tall) and a two post for working on the car.