That's pretty much what I do as well. It was an absolute game-changer for me when I discovered tiling WMs some ~7 years ago, because it meant super consistent keyboard shortcuts for getting to exactly what I wanted to interact with. I know where individual apps/tasks go, so I put them there. And then when I need to switch to them, it's as straightforward as Super+[workspace].

Also helps a ton that i3wm's workspaces only take up a single monitor at a time, which makes it excellent for jumping between monitors.

None of this is set in stone, but I usually follow a relatively consistent pattern:

Center Monitor

• 1: Primary/"serious tasks" web browser
• 4: Any remote or virtualized desktop I might have open at the time
• 6: Image/video editors. Also sometimes just misc usage.
• 8: Development web browser next to neovim
• 9: Steam/games
• 10: Misc. Often a DBMS or file manager
• 11: Misc. Often where I put any secondary tasks or second projects I need to reference
• 12: Misc. Often where I'll stick any long-running tasks that I just need to check on every now and again.

Left monitor

• 2: Music/comms/task list

Right monitor

• 3: Always only a terminal.
• 5: Text editor to use as a
• 7: Secondary/"wasting time" web browser