Hi there .
Not trying to be rude. Just I am amazed by people who wants to stay along with certain Community . I am sure you might have your reasons but if you want to live with Pakistani community then you should live in pakistan . As I said you might have your comfort zones but a piece of advise is that the more you restrict yourself to a limited connections and unwilling to embrace the power of diversity , which Canada excels at . it would be diffcult to break through in the job market .
Well you might not even need a job and might have millions tucked away and open your own stuff . anyway to anwer your question schools, grocery et.c are spread all around missisauga, you wont have a problem . Lot of people stay closer to Square One as its got a good transit connect to Toronto.
Good Luck
Well put!