Very nice setup! You're lucky to start with something that nice!
One thing I noticed...the ladder you have going up to the roost might be a little steep for them...
I've read somewhere here on BYC that your ladder should be twice as long as the height. So if your roosts are 3 ft high, your ladder should be 6 ft long. Watch and see if your chickens have trouble climbing the ladder. You may have to adjust it a bit.
You have a super nice coop!