BYU Independent Study Program?

Hi, I wanted to know how long would it take to finish a course in byu? Im a sophmore. Im planning to skip my junior year and to go on to my senior year and to do all my junior classes in byu independent studies. I was planning to take english 11, physics, us history, earth science, and algebra 2. Both parts of each course. Can it be possible to get it done within 2-3 weeks of time? My school starts in the middle week of August. I'll also be working like around 3 pm -11 pm everyday. Do you guys think it be possible? What was your guys experience? In the final exam do they let you take amount notes to use on the exam? Are their classes hard?