Define too expensive... And what is under the floor? (joists, slab, etc)? And, if joists, is there another floor under (second story)? And, if joists, which direction do they run (will the movement of the toilet drain be within the joint spaces, or have to go through them)?

No DIY ability? Moving every single fixture around? That takes an average 15K middle of the road bathroom remodel and adds a minimum 10K to it. If you're on slab, it might add 20K to it by the time you're done. You want upper end products? You've just spend 50K.

You can probably get this job done under $10,000 -- but you will have to wheel and deal.

Here is a link that might be useful: Drywall Contractor

Instead of getting "guesses" here, seek out reputable contractors in your area and get real world estimates. Most will get you close ballpark estimates at the initial meeting. It all depends on the finishes/materials that you want to get you to a closer figure at some point. Get referalls from friends, family, co-workers who have had similar projects done and are satisfied with their work. Make sure they are licensed if required in your area and insured. Check references.

To give you some perspecive: Last year I replaced our downstairs bathroom. 7 x 15, new Toto toilet, 60" vanity and sink, 7 x 3 shower with sliding glass door, Grohe faucets. The materials cost me about $9,000 (including tile / sheetrock / electrical).

When you include the tear-out, the labor, design - I could see how it could easily cost $20,000.

I see ripped up floors and walls to move plumbing all around. Definitely doable, but not cheap.

Every plumbing fixture has water pipes coming in and drain pipes with vents going out. Drain pipes run down below floor level, sometimes down the bay between joists and sometimes cutting through them, then down a wall to the crawl space or basement where they connect into the sewer line. Water supply lines typically run below the floor to the wall, then up the wall and out where they're needed.

So picture where the pipes likely are in your bathroom now and where they'd be if you moved everything around. Lots of cutting off PVC and copper, and running new.

Okay, thanks for the input. I wanted a read on if I was crazy to even think about it, this is helpful, thanks.

You have to be a little crazy to build, remodel, or repair a home. About a 1/4 bubble out of plumb helps!

We did a partial redo in our master bath this past summer...shower, new double vanity, fixtures and ligthing....and it was expensive! We had some remedial work to do in the shower that we discovered once demolition was complete...water damage.
It cost us close to 10K for the project because of the cost overrun.
Be careful with your budget and allow for at least 20% cushion for any surprises! If you can, buy your materials on line to save! Good luck!