2 Stock 4 Minute is another option we’ve been doing at our weekly ranbat here in town. We used 2 stock 3 minute for recording purposes at first but we went to time in 3/4 of our matches. So we upped it to 4 minutes and it’s been going pretty smoothly ever since with only about 1 in 5 matches (at most) ending in time, and that’s usually just when we get two people who are both pretty even in skill and are afraid of getting anywhere near the other person.
It’s an option if you want to cut down on time. Otherwise, I’d recommend 3 stock 7 minute. For some odd reason, the 6 minute mark REALLY creeps up on you when you least expect it. Most matches won’t go over 6, and the few that do almost always get decided before 7.