Can I have a Brahma rooster if some of my hens are bantams?

Currently I have a flock of 14 chickens. I have 9 standard hens, 4 bantam hens, and 1 bantam rooster. We recently got 20 new chicks, and we are considering keeping a rooster to add. I know I have 5 white leghorn roosters, I believe 1 barred rock rooster, and I think a light Brahma rooster (which was supposed to be a pullet) out of the 20 chicks—so those are the options if I want to keep one. So adding 13 standard chickens to my flock. We have a young child, so I need a docile rooster which Brahmas are known for, but will I have an issue with mating with the bantams or do I have enough standard hens that it would be okay that he may not even bother? I’d like to keep my bantam rooster if all works out because he likes to hang out with his bantam ladies. My chickens do free range if that helps at all.