pharmacy? not a high suicide rate from what i've heard really, and we had al lecture on profession suicde rate correlation.
Any health baed degree will have a high workload, yes. Biology is a somewhat an important background, but the concepts that are carried ver are considered basic in the uni course and will most likely be taught early. If you think you're good enough for pharmacy, you're good enough to pick up these concpets along the way. Much like the med kids this year who didn't do biology, you may be at a disadvantage for only a few weeks before all the content is new. If the course has a strong need for a biology background, they will offer a bridging course for you to do at the start, or before the course.
As for balance. Fisrt year of any course is a bit of fun, and not much is seriously expected of you in these long term, professional degrees as the start (monash med year 1 is pass grade only). As the course gets on in years and you begin clinical placements (which i assume pharmacy does), you will find yourself with progressively less time to do what you want, yes. But don't worry about that now. If you can work hard in VCE doing some things you dislike, then you should be able to maintain a fairly regular study habit doing a course you (hopefully) love. If you're interested in learning material, it sticks with you.
As for pharmacy being boring, it may well be for some, but from a community aspect, pharmacists hold a position of high respect for their ability to reccomend products best for the customer despite their commercial considerations for their business. A rarely hear stories about bad pharmacists. Besides matt, the pharmacists hire you so they don;t have to do the shit jobs