I have no experience on writing study plan for undergrad. The following is just my thought:
First two years: get onto your school's website, and see what kind of courses that you are required to take. Basically, you are not required to take any accounting-related course until the last semester of your second year.
Third and forth year: Take all acccounting related courses: intermediate accounting, taxation, business law, auditing, advanced accounting, etc. Take two senimar courses in my forth year.
Continue on my master program and prepare for my CPA exam.