Fearful of not finishing required lower divisions within my first year of transfer (CC Transfer)

Hi everyone! I got admitted to UCLA as pre-psychobiology and submitted my SIR. I was super excited to get admitted however, didn’t realize how many lower divisions I still have to take and second guessing my decision to go. I still have to take OChem 14c and 14d, Physics 6a, 6b, and 6c, genetics (ls3), molecular (ls4) and psych 10, 100A and 100B by the end of the year to be admitted into psychobiology. I’m terrified to stack up Ochem 14c, physics 6a, and psych 10 in my first quarter because I feel like its a heavy load. I’m wondering if maybe it would be smarter for me to stay at my CC another year and finish my Organic Chemistry series and physics which would be less stressful to take at a CC then at UCLA. However, I risk the chance of not getting into UCLA again and I would hate to miss out on an opportunity because of fear and live “what ifs” But I also have to keep in mind that I have a GPA to protect because I want to apply to PA school. This is such a hard decision for me, would love any advice from transfers!