Work study tips

Hi Im a freshman going into college this fall. I was wondering how I should use my federal financial aid. I was awarded $5400 a year so I realize that I can work as many hours as I desire. What is the recommended amount of hours I should work? Should I start from fall quarter or wait until the winter? Also I really want experience in working in labs but is that a competitive position freshman would hardly get? Is it better to have entry jobs like in the library so I can study on the off time? I know its a lot of questions but thank u in advance!!