Do you have a programmable keyboard right now? If so you can put a 36 key keymap on it and try it out, or at least certain elements of one.
A big difference between a 5-col vs 6-col is that 5 will require homerow mods or some riff thereof. If you can put homerow mods on your current keyboard, even without changing anything else, and use them for a week or two to see if they agree with you, then you’ll know for sure whether the 5 col is the right choice. That’s what I did, then made a Fifi
Volvo beat ya to it
https://youtu.be/i6QXadkl5Dc