After you said that I started looking for sheds (I really don't want to pay $700 for a plastic coop, they are nice but so small!).
Can't find wood sheds at a cheap price but I am having my lawn man draw up a price on a plywood shed. He also has chickens so should know what to expect.
Question: I am only planning to keep maybe 4 chickens in this house. If I put large square pan type things UNDERNEATH the roosting bars would that catch most of the poop? So I could remove the large pans and dump without having to clean out the whole coop frequently?
Sure can. Some mount poop boards there that they scrape off. There's another option that's much more healthy for the chicken and might be a hard learning curve for a newbie, but you might look into a large thread on here called Deep Litter. It has multiple benefits and many are just going with that instead of frequent coop cleanings.