1. It makes complete sense to weigh all options. My situation is quite different because my financial aid is really good. I also plan to apply to a lot of external scholarships. There are lot of scholarships out there.
2. Penn is well known for Nursing. I at least know 3 seniors who have been offered 6 figure jobs while in school. The networking and opportunities make it all worth it. The faculty are incredibly supportive. And they are going to train you to be a leader in your field or specialty. Most Penn students go on to get their NP license or in research institutions. So if you are thinking of a school that prepares you for leadership position, reputation, and good networking, you should definitely consider Penn.
3. It could as well be that the other schools might offer you similar thing for less money. I always advise people to get the least debt especially with their first degree. Bachelor's degrees are usually not worth the huge cost but you must also realize a bachelor's degree in nursing or finance from Penns' school of nursing or Wharton can make a big difference when you get in the real world.
4. The schools you are considering are all great. Is time to check the education you will be getting against your pocket. People use different criteria but I'm confident you will make the best decision for you. Good luck.