Look into Rinseless Wash too! It will be better than waterless wash. You will use about 4 gallons. But IMO it is an excellent compromise. The chances of scratching your ride goes down too.
So far even the Water Nazi's in my area said I am OK. I live in So Cal
I am currently using the Chemical Guys Waterless Wash concentrate which seems to work sell so far. I bought it in gallon form to save money. Any other ones that anyone suggests would be very helpful.