There is an option you can consider. It’s not quite as convenient because you have to change batteries a couple of times a year, but it will work fine And won’t require any rewiring.
Ecolink Recently released a battery operated zwave plus smart switch cover which fits over your existing switch and mechanically moves it. It’s actually kind of cool. it will work just like a regular Z wave switch, and looks like a pretty normal switch except that it sticks up off-the-wall a bit. The only negative, as I mentioned, is that you will have to change the batteries every so often.