I don't think you will have an issue. My sixline was a little bossy when he first went into my tank but he has mellowed out alot. My scooter has no issues with the other fish in the tank, even the ywg who constantly lunges for him and the other fish. The scooter doesnt even notice the YWG at all, just goes about his business.
180g- Mostly BIG fish and some coral. ~80g Nuvo- My coral tank with "happy fish"~ 90g- FOWLR Not the not happy type of fish~ 125g- Freshwater Malawi Cichlids ~10g- Nuvo- The refugees from the Ich of '18