Research-Based Physiology is a lab subject already, though...
Not that I'd discourage you from doing more than one, I've done five subjects with a prac component this year and will be taking three more next year and I definitely think pracs are helpful for your field of choice, whether they're molecular-level wet labs, dissections, data monitoring or field observations

I have heard the GENE subjects are very easy for most people, but are quite dull, so if you would rather do something more interesting to you and don't mind extra difficulty, why not? If you actually like genetics, or it's highly useful for you, obviously keep those

Other subjects you might want to do (assuming you're going for a biomedical-type major) could be Fundamentals of Cell Biology, Comparative Animal Physiology (I've done both, they're both good, and in Animal Phys there is a significant scientific paper component), Biochemical Regulation of Cell Function (apparently easy), PATH, PHRM and MIIM subjects or the aforementioned Techniques in Molecular Science. If you're more open to which sciences you do, there are a lot of good, less well-known subjects under DASC, ZOOL, BOTA, EVSC, PSYC, as well as a couple of subjects from ECOL, and so on. I'm assuming chem/physics/geol/maths/eng aren't your fields of interest.
Based on people's experiences, I'd say split Biochem and Principles of Human Structure between the semesters - I've heard that ANAT is quite a tough class, and having done Biochem, while I didn't find the content that hard (easier than the CEDB class I took, even), you do need to put in the time to learn it. Option 2 looks like the clear winner to me; doing Human Phys first will also help you in Research-Based
