My immediate thought is, do you need to take your new bike? What’s wrong with your old one?
The picture you’ve painted for me of this course and the history of crashes, coupled with your relative lack of experience, doesn’t lead me to believe this is the best introduction for your new ride.
I’m highlighting this because I can imagine this scenario playing on my mind if I were in your position. Simply having a relaxed (relative to the racing environment) and focused mind on the task at hand will really help you enjoy your race.