Well after getting rid of the tub, we have put the tub back into our MB Reno. We would love to completely rearrange, but we are on a slab (booooo TX soil), moving the toilet and plumbing for sinks is cost prohibitive so they had to stay in the same spot.

I think we have finally settled on an option that expands our tiny 3x3 shower and we can add back a little storage. There will be a pony wall separating the tub and toilet. I would have loved to do a drop in or standalone tub, but due to space I will be looking for a clean lined 60" alcove tub. There will be another pony wall to match, then glass will go up the rest of the way towards the ceiling. Can anyone tell me if the pony wall should be 4 or 6" min?

Shower will be about 36-40" x 60" and then there will be a small linen closet 30x24. Any input would be appreciated, don't want to start off on the wrong foot.