I went to Marymount school of practical nursing for my Lpn, and then I went to Excelsior college for my associate degree RN. I did it in the course of 3 years, because I had all my prereq's done already. It was tough, but the money is good and it can be very rewarding if you are working in your specialty area.
The only thing I will say, is that the transition from Lpn to Rn is tricky at first, as your coworkers get used to your new role and as you grasp the difference in what an Lpn does from what an Rn does.
Both jobs are very important and require lotsa hard work. The stress level is high, but as I said, the rewards are many. If I could go back, and I am telling u this because I wish someone would have told me... I would just have gotten my bachelor's degree in nursing, because it would have saved me time. But it's definitely do-able, either way!
P.s.) I work for the cleveland clinic as well, and they need tons of nurses, both lpn and rn.
much luck 2 u!