One year transfer here who loved to overload during my stay at a CC.
34 units in one semester is a huge jump in difficulty from your past/current course load. Also, the feasibility of everything fitting together (all the major prerequisites you need not overlapping, space in the classes themselves, a good batch of professors, being approved for any unit overload without extensive rationale) is extremely low.
I’ve seen a lot of people in similar situations who tried to one-year transfer who would have ultimately had a better shot at getting into such selective schools if they took their time. Most of your listed schools are so selective that you should concentrate on just getting in (especially for selective majors) rather than how long it might take to get in.
Edit: As a pre-med hopeful you probably want to take as many pre-med prep courses at CC anyway. GPA is king when it comes to med school admissions.