I might be a little late here, but I am running a 5.5" suspension and a 2" body lift, 11" dovetail in the rear, extensive fender cutting and 44's fit fine. Up-travel is limited, but not bad.
I plan on stretching the wheelbase out a bit which will help. With more sheetmetal work (bigger wheel wells in the rear, narrowing the front) I think I can get more up-travel out of it eventually.
Jim Cole was my motivation to run 44's, as he did on his yellow Bronco for a long time and it worked great.