Cheers dude. Hard work paid off! Now I've just got to keep it up.99+ is possible, as long as you work hard for HSC. Good job your coming first in all you subs bro!
Righteo then, thanks. That's definitely encouraging to say the least.Since you're first in all of your subjects, any atar is possible as it depends on how you go in your actual HSC exams
Look at the highest atars that your school has gotten in previous years, you'll probably be around there
Good luck