Your Colombian looks perfect. He's got the perfect size and shape to him. Your Dum will definitely get larger than 5' being a female but don't give in to her begging. Just keep feeding her the proper way. It sounds like you know what your doing

She will calm down with patience and handling. If she was neglected her attitude is to be expected.

Boas are naturally more active and curious snakes. Your male is just happy to have something to do. I'm sure he's overwhelmed with how big the world just got when you took him in lol!