Hey Ryan. That looks like Apogon maculatus from Gulf of Mexico. Gets large for a cardinal, might appreciate cooler water temp, supposedly can be aggressive. Are you sure you're not looking for Fowleria flammea from the Indo-Pacific? Similar coloration, smaller, and peaceful?
I've never seen them (either fish) locally. Most wholesalers use common names on their lists, so if you were to order them locally you might end up with one or the other. A month or two ago when I made the rounds in Sac I didn't see any of them, but I did see some of the orange lined cardinals (Apogon cyanosoma) at Jo Jo's. Those are also a nice looking fish (and stay small and peaceful).
I had thought about adding a few F. flammea to my tank also. Live Aquaria carries them regularly. If you're thinking about placing an order (from Live Aquaria) I'll go in with you pending on the time frame.