Our coop is on a garden cart, which moves very easily and the pen is separate. We put the girls in the coop, move it and then slide the pen up to it. We move it every couple of days and it seems to be working great. The only downfall is that you need 2 people, or one husband that doesn't want to wait for you to move it. Take a look at my BYC page. Very simple inside. One roost. We orginally had 2, put they didn't use it, so we took it out. They all huddle together anyway. We mounted the food dish on the wall so it didn't take up so much space and have the water hanging. The nest box is to the outside which also gives them more room. We also have a waterer outside and food tray for snacks. We have their feed inside so it doesn't get wet. Good Luck.
On another note, we have ours in town, so we put chicken wire on the bottom of the pen so they can get weeds, but can't scratch the grass so they are not killing it. We put a pan of dirt out there for them for their dust baths and usually have 2 at a time in there together.