Welcome to BYC. Most of us end up in the opposite situation, I had a batch of 12 once that turned out to be 9 roosters. With all buff Orpington you’d probably want another buff? They are a sweet breed. Around here, come March or so the local coop sells chicks, 30 breeds! I’d call around. If you don’t want a specific type of rooster I’d check and see if there are any local facebook farm share groups or local chicken groups… there are generally roosters galore!