Right now my apartment is small enough that I only need a single AP, I have it wall mounted high up in a central location so it has good coverage of the whole b

Right now my apartment is small enough that I only need a single AP, I have it wall mounted high up in a central location so it has good coverage of the whole building. There are options such as 3rd party roaming clients for (eg https://play.google.com/store/apps/details?id=com.heleron.wifiroamingfix&hl=en https://play.google.com/store/apps/details?id=com.heleron.wi... for Android) which I'd consider. For laptops, most drivers have a "roaming aggressiveness" setting which can be tweaked. In general almost all devices should handle transient connectivity glitches fairly well, so kicking low signal clients off an AP shouldn't interrupt too much.