Does your school award credit for both courses? If you take elementary, can you still get credit for Orgo 1 and 2? IMO, I would just take Orgo 1 and 2 because you only have four years at college and there are so many more interesting classes to take and again, IMO, there's little use to wasting an extra class on something you'll learn more in-depth later anyway if you don't have to.