We have a walk in tub. Takes no longer than a regular tub to fill.
Drain fast. No worry about gasket leaking. They close from inside.
Have Air jets on ours.
My balance is not good. So a walk in tub is safer.
Like to sit and soak with a nice cool beverage some days.
Shop around and look at some different units and installation.
We also have a reg.shower in the other BR.
The base plate on the toad will normally be above the bumper when in use. The base plate mounting bracket will be below the bumper. At least it has always been that way on all my toads with RoadMaster equipment. So I think you not have that much difference in your hook up.