Hey Lori
I agree, you have put a lot of effort into that coop; it looks really good with lots of room.
I also agree with the others in that you will probably need to coax them a little into using it. Depending on your temperatures during the day (I am downunder where it is a little on the hot and humid side at the moment) I would let them use the run during the day but coax them into the coop for night time sleeping. After a few days, they should work it out for themselves and go into the coop at bed time.
I had two Silkies (sisters), sadly one passed away and the remaining Silkie buddied up with a Frizzle. Up until she buddied up with the Frizzle, Tina and her sister used to sleep in a pile in the nest box; no roosting. Up until she was 12 months old, Tina did not roost.
She does roost now, but only on the special little Silkie roost I installed for her, only 6 inches or so off the coop floor. She has no inclination to tackle anything higher or join her coop mates on the higher roost. Luckily her little Frizzle buddy is happy to roost with her.
I guess what I am trying to say is do not be surprised if your Silkies do not use the roost; a pile of Silkies sleeping in a nest box or in a corner is very common. If Tina's sister were still alive and she had not made friends with the Frizzle, I believe they would still be in a pile in the nest box at bed time.
Sorry, edited to add: This is not a criticism but a genuine question, I have not seen chicken wire on a roost before and would be interested to learn the reason?