If you can get at least a Good on the PRT at this point, you should be fine. Everything else is stuff you're gonna work on when you're there. Get the gouge down cold so you're ready for RLP. If you think there's ever any danger that you might roll, let your class team know that you're worried about it and you'll age out if you roll, they're in the best position to help you out, and if they can they probably will. Make sure you work with your knowledge body so you can do well on the academics.
But really, rolling is relatively rare. Keep on top of your stuff and you have nothing to worry about.