next time try this one, it's all OEM brands and contains anything you can think of replacing while there:
http://cgi.ebay.com/ebaymotors/Fits-...Q5fAccessories
not sure if it includes all gaskets (WP, thermostat, etc.) but I think it should for this price.
another option is an Aisin timing kit (less components) from Rockauto.com
Gates timing belt is a good choice if that is the only thing you want to replace (a cheap fix). so your water pump is new? it's supposed to be replaced with the timing belt, at least it's recommended on 4 cylinder model.
try doing a little CSI after you open the timing cover up and see what could have caused the belt to snap. it might have been seized water pump or one of idlers stuck. Timing belts are not really supposed to snap just like that in 6 months... unless they were a Shitco brand.