Study.com - Courses that take longer than a month?

[Silly_Me]

I'm looking at the microbiology course on study.com & thinking it might take me longer than a month to complete it. So, what if I pay for the premium edition ($59.99 for videos & quizzes) and then switch to the college accelerator ($199.99) when I finally get through the course & feel ready for the final? Have any of you guys gone that route? I'd hate to pay $199.99/month for a course that just drags on and on, and I'm curious to know how you guys handle situations like this.

Thanks for the input!