Curtis double bass

Hey guys, I have played bass for about 4 years now and I am really interested in going to Curtis. I’m in 10th grade and love to practice scales and excersizes form the Jeff bradetich technique book ( not the 200$ one). I don’t really know what else to practice and what else I should be learning. The last solo I played was the bouree from the 3rd solo from bach cello suites. Could anyone give me and tips on what to practice, how to practice, maybe a solo I could start and how to get into Curtis!?