bro u dont get bonus points for doing engineering studies if ur gonna apply for an engineering degree. Bonus points for an engineering degree only apply to mx1,2, physics and/or chem (depending on which engineering course)
To be honest with you, its gonna be difficult for u to get that 95+ i'm not saying that you wont, its just that its gonna require a huge amount of effort. But with time and dedication, you'll get there! :D
You've state that you dont liek pd. Go for eco. then. Just cause only a handful achieve a band 6 in eco at ur school doesnt mean that u cant. As long as ur willing to work hard, then the sky is ur limit :)