You should plan this coming year carefully. Presumably you will shut down in the winter, then ramp up toward the HS season? Doing a showcase during shut-down or ramp-up is not a good idea. Maybe shoot your own video with a radar gun just before the season starts and send emails to schools. Probably you should aim for a showcase at the end of the HS season, when your arm should be in top shape, that will get you a verified velocity. PBR (much cheaper than PG) hosts these in many states, often colleges show up to the late spring ones.