Hay is an okay bedding, and free is always good. For chicks, the shavings are probably better, and one bag will last a really long time.
Your coop should have four walls and a roof to protect from the weather and nighttime predators. They need to be shut in at night for there safety. They can't see in the dark and are totally vulnerable. You can make the decision to let them wander around unrestricted, or "free-range", during the daytime. This has many benefits, as they can hunt and forage for much of there diet, provide insect and pest control, and give eggs high in omega-3's. The disadvantages would be that they are vulnerable to any predators that may be around in the day, including neighborhood cats and dogs, and hawks. Raccoons and coyotes are also a big issue in many areas in Spokane. If your neighborhood has an issue with cats disappearing, I would be very careful with chickens. An option to give them the benefits of free-range, but offer them protection, is to use a moveable chicken tractor system. If you have an attached chicken run on your coop, then I would put something on the top. Bird netting should be fine, and would help the birds in, and hawks out. Chickens don't fly much, but they can, especially if startled. They don't fly long distances, but can go up and over a 6 foot fence.
Aslin-Finch probably has gold sex-links coming in, which are good egg layers. Did you try Big R? They aren't far from Aslin-Finch, and may have a bigger selection. I'm sure there are other farm/feed stores in Spokane, but those are the 2 that I drive over for. I have an Aslin-Finch in my area, but I'd rather shop at the new Valley store. I also love Big R, and they have good service, too. Check Craiglist. Someone was listing Auracauna chicks for a $1 in Post Falls today. They lay colored eggs. I think I need some, lol.
Debra