Yes, it's safe.
to decide if non-medicated is best for you, you need to research cocci. That's the issue *most* medicated feed is geared toward. It tends to be a warm and wet kind of thing, so I'm not sure if it's an issue much in Texas. If you decide to go non-medicated, you'll need to research the signs of cocci and it wouldn't hurt to know ahead of time where you can obtain Corid on short notice if you do have problems. Cocci isn't a problem for everyone, but once chicks get over-exposed they can go downhill rapidly.