Not sure why you'd use several ONEs when something like this would make a lot more sense and only cost slightly more: https://www.modulargrid.net/e/1010-music-bitbox-2-0
Granted, it occupies a bigger footprint, but you have far more simultaneous sample voices, plus a lot of capabilities that simply can't be crammed into a 4 hp module. Also, this allows full sample editing and manipulation to be done in the build and on the fly, along with SD card capabilities, interactivity with Ableton Live, etc.