Just a little insight from a former football player who also had kicking responsibilities. The relationship between place kicker, snapper, and holder is instrumental to the success of the unit. The timing of the snap, placement, and hold takes a long time to synchronize. Then you add in the specific tilt of how each individual kicker likes their ball held, and it makes it even more intricate. When you go to allstar games, all of that is thrown out the window. You can try to get all of that down in just a few practices, but it is very tough. Especially if the coaches keep changing the personnel. I have no worries about Medley from what I have seen.
Just my two cents.