Thanks for the help Stick 
I'm not 100% sure of my major just yet so trying to keep my options open and take prereqs for HSF, Physiology and Neuroscience.
So far I have decided on; anatomy, physiology, research physiology, biochem, pathology...and as for breadth sem 1, I'm considering genetics, health and society (only after reading ur amazing review :p )...pathology will be second sem so not exactly sure what other science subject I want to do first semester. Thoughts?
Thanks again for the help!
Just bear with me, I'm going to do a bit of "working out" in this post before I get to an answer. 

You'll be taking:
- ANAT20006 Principles of Human Structure
- BCMB20002 Biochemistry and Molecular Biology
- PATH20001 Exploring Human Disease - Science
- PHYS20008 Human Physiology
- PHYS20009 Research-Based Physiology
Okay, so here are my thoughts:
- ANAT20006 and PHYS20008 should be taken together, if possible
- I'm pretty sure PHYS20008 and PHYS20009 overlap each other, but opinions are divided as to whether PHYS20009 should be taken with or after PHYS20008. I guess it depends on how you learn - perhaps PHYS20009 will help you understand PHYS20008; or maybe it's better to focus on getting PHYS20008 right first and then think about PHYS20009 later. In that sense, the overlap could either be a blessing or a curse. For the minute, I'll assume it's best to take them together. 
- Out of all of those in the list, BCMB20002 probably goes best with PATH20001 and should be taken concurrently
That shapes up to be:
Semester 1:
- ANAT20006
- PHYS20008
- PHYS20009
- [blank] 
Semester 2:
- BCMB20002
- PATH20001
- [blank] 
- [blank]
That actually leaves you with no room at all for another Science subject (unless you skip a breadth) in semester 1, so perhaps we'll move PHYS20009 to semester 2. 
Semester 1:
- ANAT20006
- PHYS20008
- [blank]
- [blank]
Semester 2:
- BCMB20002
- PATH20001
- PHYS20009
- [blank] 
Alright, so that makes things a bit easier to work with. In semester 1 you have the potential to study genetics, cell biology and microbiology/immunology. As I said, all of these go quite well with pathology so it's ultimately your pick. Having done both GENE20001 and GENE20002 though I'd say the link to pathology in that sense is actually rather weak, so unless you're really keen on genetics it's probably an option I'd eliminate (furthermore, if you want to pursue it as a major you have to take three subjects at second year level which is incredibly difficult to fit in). Out of cell biology and microbiology/immunology it becomes a bit more tough - one thing you might wish to consider is that to pursue a major in microbiology/immunology you need to also take MIIM20002 Microbes, Infections and Responses in semester 2. On the other hand, I'm fairly certain CEDB20003 Fundamentals of Cell Biology is the only semi-requirement for the Cell and Developmental Biology major (I have a feeling your other subjects may actually cover you if you choose to go down this path - have a search through the handbook). 
I'm a fan of leaving subjects you might wish to change in semester 2, so it might be better to keep PHYS20009 there given it's not "essential" and allows you some flexibility to change your mind and slot something else in there. You won't be able to pursue the Biochemistry and Molecular Biology or Pathology majors with that subject plan though, unless you take BCMB20005 Techniques in Molecular Science (this will cover you for the Pathology major as well, even though they also offer PATH20003 Experimental Pathology). 
All in all, given that the Cell and Developmental Biology major is rather open, I'd opt to take MIIM20001 in semester 1. If you really love it, you can take out PHYS20009 in semester 2 and replace it with MIIM20002. If none of those take your fancy, you can place in BCMB20005 and keep both the Biochemistry and Molecular Biology, and Pathology majors open. If you really want to throw something different in there, you can put in PHRM20001 Pharmacology: How Drugs Work. That keeps a lot of things open - unfortunately this will close off genetics though.
So, in summary:
Semester 1:
- ANAT20006
- MIIM20001
- PHYS20008
- [blank]
Semester 2:
- BCMB20002
- PATH20001
- PHYS20009 (backup 1: MIIM20002; backup 2: BCMB20005; backup 3: PHRM20001) 
- [blank] 
I have a feeling this post is going to be incredibly confusing. I hope I was of some help. :/