Reflex Bag

in september my coach said i had tons of potential i then won the silver gloves and was plotting on going to the golden gloves next year i made basketball full time though i have seen so much improvement in basketball ive been ripping up 18 year olds wont disorder championship and MVP it was my marvel to become a fantastic basketball player when i was younger (am only 13 now) but when i started boxing i felt on top of the world i went 19-0 with 13KOS I stil lhit the mits and started hitting the bags nearly the house again and when i did the mits with my cousin he siad my power got much better then last time and said i was much quicker and smoother and since i got my contacts he said when we sparred he couldnt hit me because my reflexes improved that much and said i used to be vulnerable to the left hook (since hes a counter puncher) and said he couldnt hit me with it anymore So i was wondering if i should return to the gym or should i keep going with basketball?
Also I do take pleasure in sparring with my cousin and doing all that But im not sure I have the heart to get back in the ring for real
Kungfuex i didnt say Pro i meant in the amateur levels