On a separate issue, the rear living room is great to have on cold and/or rainy days. You have a big picture window and, if you have a site with a great rear view, the window is worth it. We have had a rear bath and a rear living; we really preferred the rear living if just for that window.
I will note, if only from experience, that the tv position in all the lay outs you mention is awkward. But, if you don't camp often in the rain, it shouldn't be much of a problem.
We have no experience with Heartland but we did have a Jayco and would recommend their tts to anyone.
