I for one would love an excuse to get down to Dallas once a year,
Make sure you play up the proximity to the Barbierre museum and the Asian collection downtown.
Talking with friends, you might consider the following;
Most exhibitors want know that other exhibitors have committed, you will need a good core of sellers.
Any show of less than 50 tables May be too small to justify a good hotel and may not generate enough of a budget to spend money to attract the public. You might have to lose money a few times to get your event up and running.
The venue should be convenient to airports. Proximity to other large events like a Cherry Blossom festival or Kendo Nationals would help bring walk-ins.
The show room must be held on a 24 hour basis with adequate security so that it is not necessary to break down each night.
Most important it cannot be too close to other established sword shows, you dont want to force sellers to choose.
Wishing you success,
-t