Awesome, another gardener here :) I've never grown peas or beets myself, I don't have a lot of room to have a bigger garden either :(. But every time I would plant bell peppers they would grow just fine by themselves, all we do is water and weed the garden and it just . . . grows haha.
This photo is from 2016 when we had pretty much just peppers and like 2 tomato plants haha