Puting a nice laser might be worth checking into if you are in a really good location. The traffic count infront of your wash is good and easy to get in and out of. Depends on your cliental and house hold income of the area might be better off with all self serve bays, and the hot water will not make or break your sales unless you are up north where winters are extremely cold. The chemicals, image, customer service, well lighted, very clean, attended, reliable Carwash equipment checked daily is what makes a good site more than anything.