“1. Considering Univ Of Michigan is great school and in state for me, should I spend those extra dollars to go to Johns?”
If you can afford it, and if you think JHU is a better fit, then yes. If you cannot afford it, or even if you can but feel like you would rather go to Michigan, then obviously no.
“2. Michigan being in-state, I will not have to worry about rising costs. Does financial aid change drastically at Johns if my parents financial status doesn’t change a lot.”
I am not sure anyone can answer that, but I assume that if your financial situation does not change, and if you remain in good academic standing, your package should remain the same.
“3. Other than financial costs, what other factors should I consider to decide between these two colleges?
For example: Neuroscience course, Research opportunities, Job prospects, Entry to Med School, Any other hidden cost factors or any other factors?”
While those are all important factors, I doubt you will notice a significant difference between Michigan and JHU. If you were a doctoral student, I would recommend JHU since it is slightly better in Neuroscience. But as an undergraduate student, you will not notice a difference. Both universities offer undergraduate a wealth of resources, access to world class facilities and labs, instruction from leading faculty and opportunities to engage in ground-breaking research. Medical schools will not differentiate between applicants of either university.
I would focus instead on the difference in the overall college experience. JHU and Michigan offer very different experiences. Which one would you prefer?
“4. Being in-state Michigan is only offering me 1500 Scholarship. What Scholarships I can explore at Johns to bridge this huge financial gap?”
Like most elite private universities, JHU has limited merit scholarships. As fas as I know, there is only one for non-Engineering, non-Military students; the Hodson Scholarship. All applicants are considered for the Hobson, and they need not apply. The Scholarship is announced at the time of admission.