high paying jobs on campus?

<p>I have a few questions regarding work-study postions:
-the work-study positions posted seem to amount to only a few hundred. are work-study positions generally not offered to most students?
-since I need lots of money, is it possible to work...out...all my allotted work-study hours and then get another non-work-study job afterwards?
-is it better to secure a work-study job now? or can I wait till I get on campus and get one then? most of the jobs posted don't seem very interesting...(I was hoping to get some library job).</p>