So, the pipe runs horizontally through the area you want? Or, does it go down into the slab with the cleanout a little above the floor?
The shower would require both a p-trap and a vent. A typical 2" p-trap is probably about 5" deep plus the thickness of the shower floor (pan) and probably some other things requiring height. This could make the floor height a significant step and affect headroom as well.
You could do a conventional shower, right on the floor, if you used a sewage pump. This would allow you to also put in a toilet, and a sink as well - maybe put in a bar for the guests with a small sink and a drain for the icemaker! Ceiling height can often be an issue in a basement, so putting things up on a pedestal is not often a great idea, and it always looks cludgy.