Swatguy, the bimini attaches to the windshield frame. Here is a pic of the mount. As you can see the bimini slides back and forth so you can place it where you want it. I don't ever really use the sliding feature, but its a nice mount and makes the install easy.
The leg of the bimini shown in the pic can be completely removed with the one thumbscrew on each side. The end on the leg just attaches with the small screw, so if you order one that happens to be too tall, it would be easy to cut and just re-attach the end.
I generally slide it all the way back when its folded down and stored so that its flush against the rear seat. The bimini has a zippered cover (boot) that has buckle straps on it and I can just swing it up and buckle it to the upper portion of the tower (the smaller rungs on top) or open it fully and four point it with straps pretty much the same as badzuki.
The big air bimini looks pretty nice, but I don't think it would cut it in Arizona. You want something a little bigger and bit lower like badzuki's if you really want to keep the sun out.