I agree with hornbyben. I don’t know what your current set up is and how many cups you pull a day. You don’t want hoppers for home use. They might be ok with a load lasting a few shots. But, as it goes lower, it is bound to affect the grind consistency, IMO.
As we said, single dosing is ideal. You can change beans, easily switch between espressos and pour overs; some one may suggest not all single dose grinders will fit into this category, as some may be a pain to adjust.
You can mark on the dial — not for 20 beans — for light, medium and dark and adjust on the fly depending on the beans and age. As hornbyben, you are going to have to adjust the grind settings anyway.
Finally, I really doubt you need to change the grind settings for different beans significantly anyway.
With my limited experience, I never had to change the grind settings very much for any beans. I hardly repurchased the same beans in the last 1 year. My setting hasn’t changed at all. Just a few smaller tweaks either way is all we require to be in the zone.
I keep a log of the beans I tried; I can quickly refer them back if I were to buy the same bag. 😊