Shadowing RN vs NP - Which is most helpful?

I'm not sure if this is the write place to ask this, but I'm thinking that full-fledged nurses might have more perspective on my question. Let me know if my question might be better off somewhere else.

I am a pre-nursing student that is already admitted to a BSN program starting in the Fall. After completing my BSN, I was planning on working for at least a few years and then becoming a nurse practitioner. Becoming a medical provider has always been the goal for me, but I was also happy and genuinely excited to be an RN too. For a lot of reasons, recently I have seriously thinking about no longer pursuing nursing and pursuing medical school, instead. I have until May 1st to decide whether to commit on my nursing acceptance. I wouldn't want to take up a nursing spot at my school when there are plenty of people who are vying for that position.

I have done a lot of research and soul-searching, and I'm currently being offered the opportunity to shadow a physician, which I am going to take, and I also have the choice to shadow EITHER an RN or an NP. Would it be more helpful for me (someone who is pursuing nursing mostly to become a nurse practitioner...which is possibly my first mistake...) to shadow a NP or RN? I'm asking because I'm realizing that being an NP is still being a nurse. Which experience would be more valuable to making my decision between being the two paths? Shadowing a floor nurse or a nurse practitioner? What would say to be the most illuminating experience that will lead me to think about the right things/differences between the nursing and medical perspectives?