Welcome Beard to the forum
As long as someone doesn't add an opposite sex crappie you should be fine. If you have read a lot on the forum you will hear it 'depends' term a lot, and I guess it does. I have a 5 Ac pond that is pushing 4 yrs old that has BG, LMB,BCP,CC, and BC in it . My crappie have not so far overpopulated in fact I don't hardly catch any this year, where previously you could catch dozens in an outing. I do have a large population of LMB of various sizes up to 6-7#.