If you can squeeze a bit more money out try to get into a Speedotron set--they're tanks and will last forever. I checked ebay and here's a great pack if you can get it for close to the starting bid...
http://cgi.ebay.com/SPEEDOTRON-2401A-WORKS-GREAT_W0QQitemZ150317348750QQcmdZViewItemQQptZPort able_Flashes_Strobes?hash=item150317348750&_trksid=p3286.c0.m14&_trkparms=72%3A1234%7C66%3A2%7C65%3A12%7C39%3A1%7C 240%3A1318%7C301%3A0%7C293%3A1%7C294%3A50
check out the brown line at the speedotron site. We use Speedotron at our studio and it's good stuff. You could do a lot with two heads and a soft box to start with.