If you're right-handed it's 90% of the way there already:
Arrow keys
Enter for ok
Shift for run
The only thing holding it back is that cancel is either esc or x. Potentially I could add \ or ' as an option for that instead. And it's probably possible to put together a similar setup for the left side. Not a priority right now though unfortunately, I really gotta focus in and start plowing through the map making/system design/writing now that the assets are done for 3. Will definitely keep it in mind once this next chapter is out though.