If the leak isnt too bad, drive it for the week and just refill with distilled water as necessary. It's not cold enough to require antifreeze yet. Then get a spectra from a local place or online. They are not really heavy duty, but for a daily driver they should work fine, and probably less than 100 bucks.

I bought mine online from a place called Radiator Express. They shipped it fast and it was packaged well. Fit like a glove.