I am confused by this statement. You’re not applying straight out of high school. You’re applying out of a CC, as a transfer. You will be considered as a sophomore. Will you have 60 semester units by the time of transfer? What did your CC advisor say about your chances of transferring?
Leadership activities will be viewed in the context of your CC time.
If you want to study nursing, then apply for nursing. If you’re trying to “game” the system, by applying for a non-demand major, it’s not going to work out. Nursing is very competitive. There are only so many seats. Some schools may limit their course seats to “direct admits” for nursing.