That's a good start! I'd you have it available, also work on getting him in the box and working on quick starts out of it. My horses know as soon as they hear the chute open to go.
Also depending on what your rodeo circuit is like they may or may not have a barrier for breakaway so make sure to practice with that if you can.
Cow wise get as much practice with them as you can...even if its only once aonth.
Then if you want additional practice you can always make a dummy. I have 2. One is just PVC pipe and the other is aluminum on skids that I can have somebody pull behind their horse.
You just gotta be creative sometimes.