Your goals and equipment would be perfect for Pocket Carry Competition, which a local venue started and is popular already. If you're close by, check it out. If not, maybe see if your local IDPA venue would be interested in hosting PCCA matches.
http://pocketcarrycomp.com/default.aspx
http://caswellranch.com/CowboyRevolverComp.aspx
http://carolinashootersforum.com/showthread.php?t=93125