Hi, i noticed you posted about a year and change ago about your bathroom remodel. i'm about to go down the same path, and I think i will have the same constraints as you did - i am forced to use a rear outlet toilet, and the rough-in is only 4" off the ground. my head is spinning from trying to figure all this stuff out. What did you guys end up doing? how did you get your situation resolved with your wall-hung toilet? (i am deciding between wall-hung and floor-mounted.) thank you so much! Chirag