If you mix, receive, or load feed at night, consider positioning your yard lighting to shine in each bin, and to illuminate the slab area where the feed wagon is parked for loading. Many commodities are delivered ready to feed. In fact, a good grain mix can be formulated all with feeds not needing processing. This can help hold down the initial investment, but Oregon dairies reported a need for limited processing to make best use of commodity feeding. Most use a dry roller to crack grains for feeding.
Some operations also use a molasses-based liquid feed in the finished ration.
Of course, this requires tank storage and a loading pipe. Liquid feed can be drained into the loader bucket and dumped into the mixer wagon, but most who have tried this say it's unsatisfactory. Pumping it through a pipe into the running mixer is far better. Plan for sturdy construction to prevent damage caused by equipment moving in and out of storage bays. These may already be part of the outside feeding program or used elsewhere on the dairy.