Good luck with it. I've spent far too much of the last several months on a tub replacement - old steel tub, rusted through. Upon urging, looked into the "go over the tub" products, laughed my behind off at what a load of crap those were, and spent about 1/10 the price on a new tub and surround (not made of chintzy thin plastic backed up by rusting tub), but also spent a good deal of time doing what needs done in that case - removing walls, fixing plumbing (which would have needed it anyway), cutting tile with a diamond blade in my angle grinder, etc.
On the epoxy floor, I'd avoid the chips. Those are a "dirt hiding" trick, and are far too effective as a "dropped hardware hiding" trick. You practically have to feel to find a lost screw. Plain white is best, a very light gray if you can't deal with a white floor (yup, it shows the dirt, and no, I don't mind if it does, because I can actually see a lot better with all the extra light that reflects off the white floor). I guess if you want the texture they can give, use white epoxy and white chips.
If you have the headroom and don't mind the look, a dropped ceiling may be the easiest way to kiss the popcorn goodbye.