Do not use a drop in tub with a shower head---they are not designed to have water around the tub/deck connection--
Why don't you tell us what you really want and perhaps one of us can help with that---
Opening the floor and relocating the drain may not be as big of a job as you imagine.
Perhaps I should word things a little differently.
I am currently in one of the basement projects and will be finishing a basement from start. The drain for the shower/tub is stubbed out and is about 14" from the wall studs (aka... on the side where the shower head and faucet(s) will be).
The challenge that I am facing at the moment is figuring out how to install a tub (of any sort) without removing/chipping away the concrete away from the stub out. Of course, this process as I understand is necessary to accept the overflow and drain from the tub to connect to the drain to the main waste.
So, I thought of an approach to elevate the floor up to the needed height (like some other posters have done). This idea then morphed into a platform/drop in configuration...
Now, this is where I am with this "idea", and obviously could use your input. (please be gentle).
Thank you in advance.
Ps. I also know there is such thing as "above floor" tubs...