I like the second plan the best, but like others have said, walking thru the closet to get to the master bath is kind of odd. I'd rotate the closet 90 degrees and keep it against the outside wall. Make it 6' x 7-1/2', and have a walkway between the master bed and master bath.
Also, I am assuming that the long, empty hallway to the left of the master bath is where the stairway is...
(Also, get rid of that little, stubby wall that I accidentally left in there as you walk in the master bedroom door...)