Congratulations on your new budgie! Remember that during the entire quarantine, you need to keep Mercedes away. Do not have them in the same room again until after 30-45 day quarantine is finished, and you are confident your new guy is well.
He is pretty, and looks normal by the pics. But we can only tell so much by photos. If you say he’s active and eating, then that’s a good sign. If you have any concern about his wellness, the best thing to do would be to take him in to your avian vet for a new bird exam.
Have you thought of any names yet?