If you go this "build it piecewise" route instead of a full package DE you'll probably also want notifications, screenshot, a GUI tool for external monitor management (I go as far as using nmtui instead of a widget for networking but absolute detest dealing with sway commands to present on an external screen), battery monitor, and a screen lock/screensaver. Plenty of good options for all the above but sway is not a batteries included DE to choose so you have to find them yourself.

Mostly to learn new things I didn't do any xwayland at all. It's definitely been interesting but certainly not what most would want at the moment IMO.