You really want to move the drain under the new location. The inspector probably won't like it, and you might not like it either. And yes, I think given the area you can step in, turning it is a good idea.
Note, code requires 15" between the centerline of the toilet to any obstructions to the sides. Have you got enough room?
When I did my bath remodel, I was able to squeeze in a 6' tub. WIth the slope at the end, I've got about as much room to straighten out my legs, but I can recline on the slope. I really would have like a 7' tub, but there wasn't enough room, then it would have been heaven!