When applying to as a transfer student to UCSD, what would be a good GPA?

What would be a good GPA to increase my chances of getting into UCSD? My major is Biology, and I know it’s a very competitive major at UCSD. I’m aiming for a 3.6 GPA or higher. Also, what other things would look good on my application that would increase my chances of acceptance? I was thinking about volunteering at a hospital within the next few months; is there anything else I should be thinking about doing? Thanks in advance!

https://www.universityofcalifornia.edu/infocenter/transfers-major