I don't have a ton of suggestions for the shutters, but you might want to look at closet doors that have that shutter style of wood slatting. You might be able to cut them down to the right size.
I have a chicken tractor in my backyard. We followed these plans: http://catawbacoops.com/
Just a few notes about constructing a coop...
I'm not sure what predators you might be dealing with, but I've heard that generally speaking hardware cloth is stronger than chicken wire and is available at all the hardware stores.
Also, make sure you use Poultry Staples, not just a staple gun - raccoons and other chicken predators can easily rip out staple gun staples. We found a box of poultry staples at Home Depot - they are similar to u-shaped nails that you hammer into the frame.
We treated the inside of our coop with boiled linseed oil - the hens shouldn't be able to peck any wood that is painted or that is treated chemically. So, to avoid rot, you can coat the wood with a natural layer of oil. The outside of our coop is painted with regular latex paint.
Enjoy! Hens are great - we get one egg from each bird pretty much every day.