If you really really want to be a pilot, go out and do the hard yards... show everyone it's what you really want in life. It was only four years ago we saw 90% of people who started learning to fly at the Uni's and TAFE's drop out of the industry early on and at the moment guess which profile you appear to fit?
Knock off the maths, physics and english via a correspondance course. Get a job doing anything you can (doesn't have to be aviation related, but if refuelling aircraft keeps you motivated towards your goal go for that) and pay for your CPL and CIR/ME yourself. Don't get mummy and daddy to pay for it - sure you may get the qualification sooner, but it's unlikely you will have put in the same effort to making sure you're a professional pilot and you'll struggle in GA if the industry goes back to how it has been for 20+ years.
If you can stay on the straight and narrow in that time and save the money for the license you'll be rewarded for your efforts in the long term.
Still can't understand why people turn to drugs when there's aerobatics endorsements there just waiting to be had *shakes head in disbelief*