I need to replace a toilet with a smaller variety in a half bath. The house was built in 1940 so I can explore many options. I am limited with the depth of the unit (the bath is only 33" wide by 54" long). I would prefer a two piece setup and do not have any wall space immediately behind the unit or on one side to hang an antique tank setup. I also do not want to spend mega bucks. The ones I am seeing start at about 26"/27" from the back of the tank to the front of the bowl. Any suggestions?