Bedroom Bathroom Remodel

My wife wanted to buy a new house...My house is paid for so I asked what do you want?  She stated that she wanted a larger master bedroom and bathroom with walk in closets.  I plan on converting old bedroom to a utility room/ guest bedroom with a murphy bed that hides in the wall.  This will give ample storage and centralized location for washer/dryer between bedrooms.  Hopefully this could be added to the challenge for addition/remodel.  

Suggestions and comments are most welcome.  I am still unsure how to attach to house.  this room will attach via the bedroom door.  The wall it will attach is strait wall on peer and beam.  I probably wont do a slab.  and the roof line will be a normal pitch roof slanting down.  I do have a 2' eave overhanging that side of the house.  

bedroom_bathroom_remodel.plan