If you look at this post of mine, you'll see photos of the abbreviated opening. It's not the exact same as umbrella, but it's very close. You can see that the highest point of the door is probably at about 84". You will have to get the X in and experiment with what works best.Thanks - most examples in this thread have more clearance than I do. Best case, I get 86", but I may trade off trunk opening as a result of having to position the X behind a bar running across the ceiling. Next best is 79" if I move a support bracket (seems possible). Worst case is 75.5" if the bracket can't move (very unlikely).
I'm fine with an umbrella opening - most of the time in the garage I only need enough space for the kids to slide into the gap
The umbrella opening is generally fine for children or adults getting in and out. However, it causes one issue which is that it makes it difficult to get into the front doors when the falcons are open. The door is low enough that you have to duck under it if you're trying to make your way around an open front door. Maybe I'm not explaining it very well, but I'll just say that it's cumbersome and it annoys me regularly.
The bigger concern might be your lift gate clearance. I have 86-88" of lift gate clearance and I still bang my head occasionally. There's not much space to get items in and out when it's in the garage.
I will recommend air suspension owners to set their suspension to drop to "Very Low" when arriving home. That'll give you a little extra space.