Clarkson doesn't require you to have your pre reqs done before you go there. I've only taken two classes at Metro (math and science) and then all i need to take before i get into the lpn program is a Nutrition class and a Human Developement class, which they provide.
I would advise that you go do a college visit. I did it and they explained things to me in a new perspective and are there to help! Go in with a list of question and just ask away. I had a lot of fun doing the college visit and college tour.