If you're that keen on Med
English Methods Chem will fill your top 3
If you're straight A+ in maths Further/Spesh should be another one to do
don't do economics if you're thinking of dropping it though, probably just go with Biology and something else.
That's why I've done this topic also, I don't know if I want to do med. :S
And I think it may have been you but someone said not to do spesh if I don't enjoy maths.
I might move into further this term and do the 3+4 in yr 11.
Keep your options open with methods and chem in my opinion 
Let's you do science, engineering, biomed, med, pharmacy(?), and a heap more. And methods is needed for commerce.
If you want to keep your options open, perhaps
Methods, English, Chem, Biology, BM, IT ?
The other dude, I hear thesame bout Spesh too.
And Taiga, good point.
I'll probably do methods, further, economics, chemistry, English, and an easy subject like IT or BM. (further, Eco, eng and BM/IT being the top 4)
Weird question to ask, but are you 100% sure you don't like Maths? Like, I know that I thought I didn't like it, so I really reluctantly went into Spec this year, but I find that I kinda enjoy it a lot more then I thought I did and it's way better than what I initially though would be really good (Accounting - most boring subject ever).
Doing further --> Spec may be easier in terms of content, but I know that learning further level crap and then studying it enough to perfect my technique so as to get a score in the high 40's would be much more of a pain in the ass then spending time learning difficult yet rewarding concepts in Spec., and being able to practice Q's which actually require thought and probably aiming for a raw SS of 38+ (I think it's scaled to like a 44-45, duno).
I was in your position last year though, and I chose methods, spec, chem, eng, bio 3/4 and accounting. Bio unit 3 at least is pretty interesting and I think if you put in the time to study (practice exams) you'll do well, and based on your background you'll probably do fine in methods/sciences.