Glad you have joined us.
Michael OShay has given you good advice and links to help you in your coop design decisions.
IMO the type coop/run to select is determined by your climate, the size and purpose of your flock, how you plan to manage and care for the flock. And whether the visual appeal of the coop matters to you. Even if you are getting help from an experienced builder, they will want specific plans of what you want them to build.
Many of the BYC members have graciously given very detailed information and photos, drawings of what they accomplished. There are a number of books with coop building examples and detail suggestions. There are also several Youtube videos that detail chicken coop/run building. Not all examples are perfect, but exploring what others have done will help you decide what you want. Once you decide on a basic plan, then research or post questions to help on the fine details. Make a scaled drawing of the building plan - get some graph paper, pencil and a big eraser and draw what you want. Add feed, water fount, roosts, nests into the plan to see where they fit in. And look at how you will access all areas for daily care, egg collection and cleaning chores.
"What would you do different?" were lists I found quite helpful. The one I failed to listen to was "build larger than you think". That one will save you trouble down the way. The one I would add is " make sure nests are located so poop is not tracked into the nests".
Do feel free to ask questions, we are here to help.
Good luck on your planning.
