Good luck!
Just make a schedule to organize yourself and you should be fine with what you have so far.
I believe they discuss when you should schedule you OAT in the first class. I think they tell you to schedule it now for a date about 2-3 weeks after the class ends. I know I scheduled it for 3.
As long as you stay on top of things I don't think you'll have anything to worry about. Once again best of luck!