like this very much seems to fit the need and is able to be built with the budget available, like the side entrance as a different option. Uses the front area in a different way but that is good for master bedroom and bath area.
Positives: Makes best use of the space, no long entry corridor
Negatives: Master bath a little small, Side entry is main (People would probably get used to this). May be high construction cost (looks to be gutting interior)