Yes, you certainly want to run PCT after your cycle to get your test back online and GH will help as well. In most cases, I would suggest that someone waited to run GH until they have had more experience, but if you are playing Division 1 sports, you have a limited window and I could see adding it in now. It will help with recovery, especially if you are doing repetitive movements, like pitching. I do want to add though, that it isn't going to help you, nearly as much as it will help someone that is older. At your age, you are producing optimal GH and test naturally.
3iu split into two daily shots for at least 5 months