Bullet, heres a snap of mine, 3 meter walls but only a 7.5 meter bay.

As you can see if i move the HB (car under the cover) and put a two poster in the middle of the bay theres more than enough room to get the LJ up higher than i could work on it, or any other car i own really.
Your 9 meter bays may have a slightly higher center, mine are about 3.8. Even if your peak height is the same then your roof wont slant off quiet as quick giving more room front and back.
Biggest problem with the Pagero is an obvious one, its a wagon, so the back of the roof is going to be where you come to greif, but surely you could get the chassis atleast 1.6-1.7 off the ground. So slight crouch.
Cheers.