U can start with like 20 to 25 lacs,, should not be a exact amount should be like 23,45,300,, kind of amount and add some amount every month for about 6 months,, in this way ur statement will look perfect and balanced,, always add bank certificate with statement,,
Go to this link for requirements for students visa,, specially for paki students,,
http://www.canadavisa.com/canada-immigration-discussion-board/study-permit-requirements-for-pakistani-students-t173401.0.html
if you can prove money is yours then even one month's statement would be enough. you can do so by showing a loan latter, a retirement latter(If sponsored by Father) etc.