Are too many classes bad?

I am a biology major at a community college looking to transfer to uc davis. I recently have not done too well and my gpa has fallen kind of low on the 3.2 to 3.3 range. I am trying to take some classes I do not need to transfer such as statistics, calc 3, and some random 3 unit bio class. I plan on getting A’s in all those. I am wondering if that will make me look like a better applicant, or if I am just wasting my time taking classes that are not required.

You’re wasting your time. You should focus on getting A’s on classes that are relevant to your major that you have left.