I guess I could answer your question since I came here and mustered the energy to complain about your silly title.
The way you are wanting to do it is okay, just not how most pre-meds do it. I would suggest going the Bio and Chem freshman year route, for the same reason stated by your adviser. You're going to want to get into your upper-level Bios soon so you can spread them out over several semesters. However you do it is fine, though, as long as you get in your required classes before you apply.