What service level are you trying to accomplish-Quick clean and windows for the budget minded or reconditioning for the aficionado? Regardless of how you approach this (in house or lease), the result will reflect directly on the reputation of your wash. Detailing is a labor of love and it's hard to find people who have that level of passion. Success is, once again, about under promising and over delivering. Start slow and put out the best vehicle around and you'll have a solid foundation on which to grow. Good luck with whichever direction you choose to go.
MC