I do think of myself as a strong student and believe I can handle 4 APs. Based on the responses however, it seems that I just have to accept the fact. I will not have time to add a class as dual enrollment which is why I was hoping to take another AP replacing the on level class. Thanks for all your input.
I was concerned that colleges will appreciate 4 core class APs instead of what I have which is core class 3AP and then 1 computer science AP. Anyways, it seems the case is closed unless my school contacts me to let me know there is a spot. 
Thanks for your time.