The sport you're looking for is USPSA/IPSC and/or multi-gun, not Steel Challenge.For my penny of opinion: I would prefer to run around on wild stages shooting different types of targets and firing lots of shots. Compared to standing in a box shooting 5 targets but being able to accurately judge my times against others. I may be in the minority but I go primarily for fun, think rec league kid sports. If the trade off for having cool stages and in my opinion a relaxed (but safe) environment is not being able to judge my times against only guys with the exact equipment as me I'm fine with that trade. Maybe that could be that way the weekend shoots are divided it we end up having the support to do Sat/Sun shoots.
EDIT: this was an overly dismissive response, so let me explain further.
I have a 9yro son, and I would like to get him involved in the shooting sports. He can safely participate with a 10/22 in a traditional SC match where it's standard and deliver. I am not so sure I think he'd be up to doing so when he needs to run and gun. The same could be said for people who are mobility challenged. So while I personally enjoy shooting the run-and-gun stages, they have their drawbacks.