"You gotta" won't fly. "There marks", "there grades" won't fly.
Generally, I overlook these things as the GP can get a little annoying but, in considering that your post was about the fact that you are taking a path that is very demanding, these basics should be in place. You're not doing yourself any favours by grumbling on a forum about how you don't have time for this....if you have a heavy workload and can't afford extra time to study, why are you on a hockey forum during a lockout?
A negative response, but this is what jumped out at me so I'm only being honest....
Correction: Your basic grammar and writing show that you need to do so if you're planning to enter law school.
Sorry I couldn't resist. Don't ban me