I have a similar goal. When I first installed openBSD, I used it that way for a while using tmux. The main issue I ran into is that the console doesn’t support

I have a similar goal. When I first installed openBSD, I used it that way for a while using tmux. The main issue I ran into is that the console doesn’t support a number of the things I have gotten used to in gui terminals (Unicode, full color support, mouse scrolling) it was actually really close though, especially because on openBSD you end up using man pages instead of internet searches for a lot of tasks. I think what ultimately gets me every time I try this is the web browser.