Advice Needed

<p>Hi. I will be a freshman entering college this fall. I intend to major in Biology and declare myself as a premed student. I have registered to take Intro to Bio, Bio Lab, Intro to Chem, Calculus, and Psychology. This all add up to be 15 hours of credit. Is this too much for my first semester of first year? Should I drop Bio Lab and replace it with Economics? I have been told that taking a variety of classes is beneficial. However, I would love to read opinions of others. Thanks.</p>