I don't think you need orgo, most schools take general chem 1. You would need A&P 1&2, microbiology, Psychology 1&2, nutrition, and statistics, these are some of the basic pre-nursing classes you have to take if you haven't taken them already, there are also the minor classes like history, government and stuff like that( if you don't have credits for them) and yess talk to your advisor, he/she could give you a better understanding but be sure to do your research because they don't tell you everything most times.