Snyder"s formula again:
Chips Minutes Pateince Factor Skill Level
5,000 15 17.42 6
4,000 15 15.19 6
3,000 15 12.79 6
5,000 12 12.68 6
4,000 12 11.15 5
3,000 12 09.38 4
5,000 10 09.84 4
4,000 10 08.59 4
3,000 10 07.24 3
I reckon 4,000 with 15 minute blinds could be the answer, possibly? Even 3,000 starting stack would provide a more "skillful" tournament.