Heyy, so I think first of all you should think about yourself like if you really want to and feel ready to come out to your new friends and your parents. I am bi myself and it’s really helped me to know that you shouldn’t feel obliged to come out and that there really is no rush. If you really want to tell them I would suggest to first tell the person you think is easiest to come out to and who will probably react the best. Then later when you are more confident you can move on to tell the people who might be more difficult. Also remember that even if you decide to come out to a certain person don’t try to force yourself to come out in the first possible moment but rather do it when it feels right.
You also mentioned that some of your new friends won’t like you if you tell them. About that, I know you probably don’t want to hear that but you shouldn’t have to pretend to be someone you are not especially around your friends. I’m sure you’re an amazing person and if they can’t see that and appreciate you for who you really are then they don’t really deserve you.