The group decided to meet two days a week for two hours starting at 8 AM. This schedule is working quite well. Ninety minutes per session would have been a bit too short to complete the interesting discussions that are coming up. There are about six individuals in our group plus myself (I'm the facilitator).
Before our first meeting, I asked the group to read 8 pages from Chapter 1 of Expert C# Business Objects:
Distributed Architecture; p. 1
Logical and Physical Architecture; pp. 2-3