Advice for hosting "Horse" tourn or cash game

[fortunesknave]

I host a weekly NL hold'em tournament with a good turn out (12 regulars, 8 semi regulars). I'd say there are 4-5 of us that like to play other games. I was thinking of also hosting a "horse" tournament or cash game once month.

These are my thoughts:
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* we would exclude the Hi/Lo options and play limit: Hold'em, Omaha, Razz, Stud
* If it was a tournament, we would have one limit for each game, and after a complete rotation, raise the limit. Each game would be played for maybe 10 minutes?[/list]
Or should I skip the tournament and just play cash?

Any advice on how to get other players from our regular tournament interested in playing?

Thanks.