Hello Chris and welcome to the Shack!
Good to see another Alabamian here.
I'm going to suggest to start a new thread in our Home Theater Projectors forum for your question so that it will get the proper attention... being this is just an introduction forum here. But, on the surface, a 4' high screen at a 16 x 9 aspect ration will be about 85" wide and will result in a 97-98" screen. With that projector your throw range will be 12'-14' from the screen. Recommended seating is 10'-16' back. Your room should be plenty deep.