You can't just do chest and biceps only, you have to work on your back, shoulders and triceps to even your body out. Otherwise you will put too much mass on the front and your body will curl forward naturally. I heard that doing your legs are important too, someone told me something about that but it was too complicated and I have no idea what she was talking about, but I think you're fine because you are using your legs a lot from football anyways.
I will do chest, shoulders and triceps on one day and back and biceps on the other. Remember that you'll be using your triceps when you do your chest and shoulders therefore it's better not to do biceps on those days.