Wow with a coop like that I bet there will be a few marriage proposals. If you build a coop like that for your ex I can't imagine what a coop for your current wife would be like. All kidding aside you are a example of what to do in a divorce situation. It isn't about your past relationship but the kids so hats off to you.
OMG Opa I would love to have a coop like that, you are so great to do that for the ex (well for the kids but ya know...) You didnt happen to draw up plans for that as you designed and built it...just maybe?