Ahhh I see. Well, first you should REALLY consider kegging. Then once you mix your star stans you can keep it in the keg until you are ready to fill it. Take the star sans fill it in another container, fill keg per usual and then add the star sans to the bucket after a good scrub. Least that's what I do for a few brews then get a new solution going. Water is pretty spendy where you are from, but you should still be able to brew cheap enough that its less than the $8 a six pack you'd spend at a liquor mart.
But then again, I'm obsessed with brewing so I'll pretty much find any way to do things efficiently and cheaply to keep me brewing!
Recipe looks good though.