Depending on your tractor, 3ph blowers might float up and down, but they'll maintain their tilt. If you set it up level from front to back with a fixed top link, it'll stay level whether it's on the ground or picked up 18". That'll work on level ground. If you start backing up a hill, the bottom...
If you are going the hydraulic route -- add a remote for a hydraulic top link. You are going to want to be able to tilt the blower on your 3pt if you have anything other than flat driveway to clear.
If you don't need the hydraulic top link to tilt the blower, then for what it's worth, I'd...