Haining,
As drawn, your plans do not appear to meet the code requirements. Please note the following code requirements (refer to the 2009 International Residential Code and the 2015 Uniform Plumbing Code for all code requirements and exact language):
Bathrooms shall have a
minimum ceiling height of 6 feet 8 inches at the center of the front clearance
area for fixtures. A shower or tub equipped with a showerhead shall have a minimum
ceiling height of 6 feet 8 inches above a minimum area 30 inches by 30 inches
at the showerhead.
The clear space in front of
any
toilet or sink fixture
shall be not less than twenty-four (24) inches (610
mm).
Please let me know how you would like to proceed with this project.
Keri