Chances of getting into CU Boulder?

I really want to get into the University of Colorado at Boulder for their business school. Although I don’t have a good GPA at all… i just finished the 3rd quarter into my junior year with a GPA of around 2.5-2.6. I didn;t care about school the first 2 years, but now I really want to go to college. I am taking SAT’s next week. I am very confident I can score at least a 700 on the math, 600 on critical reading, and 600 on writing. If I got a 1900-2000 on the SAT, with a 2.6 GPA (hopefully get it up to a 2.7-2.8 by the time I apply), would I even have a shot? Thanks in advance!