Tmux + nvim for editing code and bspwm for a fully keyboard only workflow. I have some keybinds in tmux to open a new pane and run cargo or whatever command is necessary to run the code.
I have to use vi/vim from time to time for basic editing (like on petalinux for example), but it is quite intimidating to get into. I'm already over my head right now, so adding a new learning curve might not be the best timing.
I had to use vi for work (only editor installed on the servers), and it snowballed and now I can barely type in anything that doesn't have vim bindings.
The first few days were pretty rough, but I learned the absolute minimal basics, and then just organically learned features as I needed them/whenever I felt like what I was doing was tedious, and there had to be a better way. It's been about 10 years, and I'm still learning!
One small suggestion, check YouTube for videos of people showing off vim features, e.g. https://youtu.be/5r6yzFEXajQ. You won't remember everything from one watch, but it'll help you see what is possible/how powerful vim is, which can guide your "this is so painful how do I make this better" searches down the line.
Someone suggested vim adventures to learn vim so I will look into that for sure. I really like the proposition of the Vim.l workflow, but I need to set time aside right now that I don't have. But once my project is started properly, I will definitely dive into Vim