ltg25, there are some very good teams in Louisiana and I'd suggest you take a hard look at some of the top travel teams. With your son's size and velocity that you indicate, he'll be a player who's very much in demand for summer travel teams.
Keep in mind that everything he does can impact his chances to go somewhere. How he handles himself on and off the field, and especially, in the classroom, will have a great deal to do with the opportunities he might have presented to him. Encourage him to make wise choices and represent himself well. While velocity and throwing strikes are very important, so is being a good teammate, citizen and student, more important in some respects.