Ben can i give you some advice you seem to have to many pigeons this for me is a major stummbling block that will stop you gettting the results you desire or actually deserve for all the time and effort you put into them.
You are having to spread your time to cater for all your birds.
In your sittuation i would breed your younguns then race either your cocks or your hens not both and give them the time and loving care that will make them race to you.
I know this will be hard for you with your school work and exams, This is only my advice to try and help you.
I belive in quality not quantity and loving time with each bird..