Completed on their 5-week birthday, so I was able to move them today into their new coop!
Wanted to thank everyone on BYC for all their superb help in making this a successful move. They are all cozy and the "trauma" of the move from brooder to coop appears to be forgotten.
Thank you, everyone! It was pouring out today and I realized that there is no space for me to visit without getting all wet (hindsight lol), so I will have to build an enclosed addition for me to stay dry.