Edmond has many wonderful MDO programs. As you mention being involved in church, once you find a church home, you may find that they offer a MDO program which makes it quite convenient. Also Edmond is quite spread out and traffic can be a pain. Once you select a home, I'll bet you can find a quality program within a couple miles of your home.
Edmond also offers PreK through the public school system. It is a half-day program (2 1/2 hours either AM or PM). It is quite popular and there are not always enough openings for everyone that wants in. Students often attend at their local elementary, but some classes are taught at day care centers. If you are interested, I would contact Edmond Public School (look online) and get your paperwork turned in by the deadline (coming up in March or April). If you changed your mind later, you could always give up your slots to someone on the waiting list, but if you sign up late it is hard to get in.