Matt,
A suggestion. When you use flat bar for the hanger, consider a hook that engages the flat stock. this way the hooks look straight and the finished product is more appealing to the eye. i made a slew of those in different lengths and orientations for a kitchen pot hanging system. They worked good and they looked great for the walk through with the client.
Note the design of the hook where it interfaces with the flat stock. Think details, balance and function.
Photo attached for your review.
Peter