There is a huge amount of info available here, and I hope you will research it.
You might find it simpler to wait til you move, and build a larger and more permanent coop that you can walk in and store feed, etc. in. I have never had one of those 4' tall type coops, or a chicken tractor, and don't want one. We recently built a coop that is around 8'x12' attached to a yard that is about 75' x 75'. We have 4 hens and 50 young ones around 8 weeks. Some will be processed. Not sure what we will end up with, but we won't be in the position of wanting to get 5 or 10 chickens and not having the space for them. The 4 sq ft for the coop per bird, and 10 sq ft for the run per bird, that is generally presented here, is evidently a minimum to prevent pecking, cannibalism, etc. Chickens in truth like a lot more space than this. They actually prefer to free range -- but then they get taken by predators, in some number.
Just do some research and be sure of what you want in the end before you start; you could save yourself a lot of money. For example, materials are mostly 8', so building something less than 8'X8' often involves wasted materials. Many who think they want 4 chickens wind up with 25 or 50, or more. Just think it through.
JMO.
