Shawn, per recent comments, whereas I am sympathetic to your design dilemma, isn't it fair that, after seven posts and numerous, no doubt viable/helpful & FREE opinions you've benefitted from, I ask the larger community here if I would be out of line to suggest that this is enough? I believe the intent of this site is that home owners use it explore materials, methods and to seek out advice, as you have--to a point. This site is not intended to function as penitent Catholics offering free design services in perpetuity. Design is of equal value, at a minimum, to the improvements you intend to make. The nature & concept of this site is to promote both the exchange of ideas and services. At some point, it will cease to function if it is treated solely as a one-way exchange of information and no opportunity. I ask that you show this community respect by hiring an architect/designer in your area for a consultation. I appreciate your consideration. After seven posts, we've certainly earned it.

It is definitely a very important thing to have a toilet and sink, even a small one in a master bedroom and I would leave the shower in the main bathroom with a toilet and sink there that is accessed from the (is there a hallway entrance?) If you entertain friends you want them to be able to use a powder room without entering into your private bedroom, which may or may not be up to viewing condition. If that second bedroom does get used as a guest room on occasion, again, you would rather not have the guests traipsing into your room at midnight to take their hot shower after their flight if you have an early morning the next day.

I think one of the lights should go in the shower enclosure (as shown in option 2). The other light should be more centered in the sink space (as shown in option 5).

Make sure that you get a dimmer that is compatible with this fixture. Not all dimmers are compatible and the wrong dimmer will cause all manner of odd things to happen - most notably flickering, buzzing and in some cases the fixture will cut out at about 25% dimming. A good lighting rep can help you out with this or check the website of the dimmer manufacturer before purchasing. Both dimmer manufacturers and fixture manufacturers are now listing compatible components on their websites.