I've got the "normal" clearance UFC TT. With that, a 1" BL/1"MML and a Rubi 241 TC, it's got about 1/2" clearance to the floor of the Jeep....and even then, I had to pound the floor for clearance in 1 spot.
My opinion is (you asked for it!) that you're not the first guy to do this, and that it's unlikely that you're going to find any "secret" way to make it all work without hitting.
Call the companies involved...they know what they're talking about. They've seen and heard it all. Listen to what they have to say, and make your decision.