Our philosophy on when to multiply a small group is when there is an identified leader and co-leader not when the group is "ready". This may seem harsh or difficult at times but from what I've seen over the years, groups tend to wait as long as possible or are simply unwilling to multiply. The goal is to see new people come into relationships with other Christ followers and be biblically shepherded and cared for. Out of love for others we are willing to multiply our small groups.
Here's a shot I took last Sunday of the four current leaders as they were discussing the plan for this coming Sunday's promo of small groups. They and their wives have and are doing a great job of teaching, leading and shepherding their groups.
From left to right they are, Jeff Persall, Kyle Mielke, Chuck Taylor and Jeremy Hart.