My dad says doing.......
Try this crazy idea on for size; Maybe consider doing what you actually want to do and thinking about it. Put some really good thought into it or a much much better option is to take similar subjects in VCE and see if you're cut out for it. Just do it on your own accord though, around here i often see people doing jobs justs for the priestiege/money/parental pressure. Definitely not the way to go about it.
I thought you couldn't do pharmacy through science? Sounds a little impossible to me(Subject/Faculty wise) but i could be wrong..
I don't know about melbourne but i think if you be sneaky at monash and try to biomed coded subjects behind their back, when you go to graduate and when they look at what you've done, it won't count as "science" subjects. So, you pretty much would of wasted 3 years. Unless you mean doing similar subjects that are coded under science, because i hear they are kind of different. They cut some of the stuff out that isn't relevant at all to the biomed field.
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There will always be a need for IT. There are just somethings that can't be exported like on-site service, engineering networks for unis & bussinesses, ect. That said there have been a lot of people getting into a field that just 10 or 20 years ago has had very very few people in it. I think there will be an "adjustment" comming soon. I'm predicting wages will go down (these guys get paid pretty high compared to a lot of other graduates) and the market will probably be flooded. You can look on the whirlpool forums for more info on this, they quiet often talk about topics like this. Then, there will be the jobs that can be easily exported, like software engineering. Probably not the best idea to take that up.
Mining/Oil is absolutely gangbusters now and i have looked into it; the pay is rather high. You probably won't find it hard at all to get a job and you'll be living pretty well off the salary. I don't really think it's declining any time soon either. It does have a lot of challenges with it though, going out to remote locations for large stretches of time like mines in the middle of nowhere or oil rigs out in the sea. You have to be prepared for those kind of things and also think about what impact thatll have on you and your future family as well. You probably will have to move to WA or maybe SA. I don't think there are many jobs in Vic for that kind of thing. Just educate yourself on all the paths and do the research. Again, people on whirlpool talk about this fairly often, so i suggest you have a look around the job forum section on whirlpool. There are actually people who have worked in mines and things like that on there. You could also make your own thread i guess as well.