Since it is a club, go for donations.  If you don't, you will probably only break even.  Try to get anything you can donated that you do not have, PS, MB, CPU, RAM and especially GPU.  Even if you get a crummy video card donated, as long as it is 5830 or better it should be worth it. 

If you have to pay for all of the parts other then what you have listed, you may not make any money at all, or not within half a year or more.