I'm with others suggesting local mills, and pointing out that ever if you feed all organic, you can't advertise and sell them that way. I went from paying $16.50/40# at TSC for All Flock to paying $24/100# from the local mill, and I get more recent mill dates as well. If I bought 10 bags at a time, I could get it cheaper still, but my little flock (currently) can't eat it that fast, so I'm paying a small premium for freshness.
A BSF Composter to pump out protein treats is a great idea, but I found FL too hot for it to work. You may experience similar difficulties in AZ - be aware. The benefit of one is so great that I'm going to try again this spring, now that I've moved it to a cooler, more shaded spot.
and re "organic" and hormones - your local mill maybe adds stuff for medicated feeds - which will be all over the label - but I assure you, they aren't investing in extra equipment to add hormones, vitamins, or anything else to the feed. What they are doing is taking (largely) local grains by the truckload, mixing them together in some ratio, then dumping them into a big machine to grind them to powder.
For an extra fee, they put that powder in another machine and press it into pellets before bagging. Or you can mix your "crumble" with water to make an oatmeal like consistency, and get loss down like you were using pellets. Let it ferment a bit, with time and a bit more water, you can adjust the natural vitamin content slightly, and maybe have a bit less pasty butt in your hatchlings. Wet food will also help them with heat related stresses, or so I've found.
/edit and yes, mine free range too. They are free choice as hatchlings, and then in the grow out pen, but at 8-12 weeks when the layers join the flock? By that point, they free range all day, then come into the pen for the one and only meal I feed them each evening, so they are guaranteed to go to bed with full crops - and motivated like hell to forage all day. My birds eat about 4# dry weight of feed each day, and I buy 150# at a time, make my own 21% protein mix. Two bags of 24% game bird, plus one bag of 16% layer.