Well, I gave it my best shot. But I too found myself needing an X11 session at times. I didn't have the time to look into and set up GPM, and I never actually got Browsh installed on NetBSD. I used Lynx for most of my browsing which wasn't a lot. I basically just spent time focusing on cleaning up my system and backing up my files. I only ever had two tmux panes open at once as I'm on a laptop. I actually didn't even need multiple TTY's as tmux was sufficient.

I did run into some problems though. using gnupg-pinentry-tty to authenticate pass was problematic in tmux. the pinentry program wouldn't open in tmux and I would need to kill tmux to enter my master password. But even then, I found out that my passwords weren't copied to my clipboard, or at least I had no way to paste from the clipboard into a TTY. Perhaps there is a solution to this.
EDIT: I've realised that tmux has it's own clipboard

I did manage to set up my tmux keybindings to match my wm (sdorfehs) bindings. This is fine because I never use tmux in X11 when I have 10 workspaces available and I very rarely use ssh so yeah. I kind of gave up after a while. But it wasn't a total waste. I don't have much else to do on my laptop besides edit files and browse the web so really it wasn't all that bad. But not being able to push to my git repo (without having my password) I had to log into X11 to do this.

All in all, what I learned is that I like nice fonts and pictures.