wow... all 3 sciences eh?? only the really really smart ppl in my school do those subjects all in one go. and to emphasise my point, i go to a selective school XD, but judging from ur subject choice, i think you do too =p
yeah, back to the question bit:
2u Maths: easy peasy, dont worry about it
Ext 1 Maths: requires u to think a little outside the box. but i'm failing it because i'm stupid ^^"
2u Eng: annoying as, but u dont get a choice
Ext 1 Eng: Make sure that you're good at BOTH analysing texts AND creative writing, as each of those components are worth 50% each to ur marks.
Chem: its fun ^^
Phys: make sure you have a good teacher. if u realise that ur physics teacher is a bit lousy/dodgy/whatever get a tutor or a really good textbook and knuckledown ASAP. but most of it's just applying formulas, so if you're good at remembering and applying formulae, u'll do fine.
Bio: i dont actually do this sub (i do economics instead), but all u need to do is read and remember stuff. apparently my friends dont do any work in class and they still get an average of 80%+ for their exams
JeZZa's Verdict:
awesome choice if you're sciency (as mentioned earlier). if u can absolutely kill these subjects, you'll have an awesome UAI coz these subjects scale u MASSIVELY... provided that u do well in it of course ^^. but make sure that u actually have an interest in these subjects tho coz if you're not interested in the subject, a majority of the time, u wont pay attention in class and u wouldnt have the motivation to put in any effort to study for that subject.
but right now, doing 6 of the 7 subjects that you're thinking of doing, i'm like.. dying lol... possibly because i've been slacking off (??).. but i'm sure that with hard work, u'll ace them =D - i did that with chemistry, originally i hated it coz i didnt understand it, but after i got my act together and started studying for it really hard, i understood most of the concepts and now i'm doing pretty good in it.
look, the subjects that u've chosen are good and all require quite a lot of work, it just depends on whether or not you're willing to put the work into it.
yep, enough of this old man's babbling!! good luck with ur subject choice dude!
JeZZa