OK, 5 is great! I'm thinking about my center block also...Don't have a CLUE! I'll be surfing tonight looking at quilts and searching for patterns. Can you recommend a good size for the center? What size did your 2 quilts you've shown here end up being?
Got to get back busy...working on the challenge block swap blocks. I'm almost done...yea! Early too! With that one done, I'll have more time to devote to the round robin. I just can't wait to get started!