I don;t think he’s likely to get money from Georgia. It just isn’t known for giving money to OOS kids. The Florida schools will give a NMF a full ride (usually a full ride plus, because they will stack other scholarships).
Any big school is going to have all kinds of kids with different interests. He might be able to get some good creative writing opportunities through the honors programs. Most big schools will have biochem type majors. Most will have marching band, and some will allow non-music majors into their smaller band groups.