If it were me...I would focus on the soaps/creams and possibly do back up care for other providers on the side. If you decide to go this route- definitely let other providers know you aren't here to try to take business away from them (even give them some samples of your products, which could drum up new sales).
I find it's always nice to have other names of providers to give parents when I take my vacations. I didn't have anyone to recommend when I went on maternity leave for 3 weeks, and ended up losing a family.