HELP: PMM

I HAVE APPLIED FOR IMMIGRATION IN FEBRUARY 2008 BUT I AM THINKING OF APPLYING FOR A STUDENT PERMIT.
I HAVE BEEN ACCEPTED BY A REPUTED COLLEGE IN TORONTO FOR A BACHELOR IN BUSINESS DEGREE AS MY CONSULTANT HAD SAID I HAVE MORE CHANCES OF GETTING THE VISA WITH A DEGREE COURSE.
I AM IN LONDON, ON A STUDENT VISA AND SINCE I WANT TO LIVE IN CANADA, I THOUGHT IT MIGHT BE BETTER IF I APPLY FOR A STUDENT PERMIT AND GET CANADIAN STUDY EXPERIENCE RATHER THAN WAIT COMPLETELY FOR MY PR TO COME.
ANYWAYS CAN U TELL ME HOW MUCH FUNDS I NEED TO SHOW.
SINCE I LL BE LIVING WITH MY COUSIN, I DNT HAVE TO PAY FOR ACCOMMODATION BUT MY TUITION FEES IS CAD 11,500 PER YEAR.
MY UNCLE WILL SPONSOR ME BUT I WANT TO KNOW WHAT CAN I DO TO MAXIMISE MY CHANCES TO GET A VISA AS I WAS REFUSED A TRV LAST YEAR.
I PERSONALLY, FROM MY OWN ACCOUNT CAN SHOW ABOUT CAD 20,000 BUT MY UNCLE IS THE ONE WHO WILL SPONSOR ME.
CAN ANYONE PLEASE HELP ME. I SHALL BE VERY GRATEFUL FOR ANY HELP PMM OR ANYONE.
THANKS AND GOD BLESS :)
OCANADA :)