Bag seeds are the way to go on the cheap. I have put bag seeds away if the high is good and keep a few notes. The only issue I would see is height depending on if its an indica or sativa, but you can always LST, top, FIM, etc for practice.
trust me I trired a grow thinking I knew enough......HAHAHA what a joke you can never read enough!!! read up on everthing you can because knowledge now will equal a better grow in the end! just my .02