Words paint pictures. I hunted with a friend who has a wingshooting operation. You pay by the "shootable flush" and that means, as defined and reviewed prior to the hunt, any flush within 30 yards.
Take time to think through your wording. Define it. Define it again. Then bounce it off several folks and get their input without tellin them what you mean.
Bit time consuming, but saves a lot of heartache down the road and bad public relations. They say if you do good, folks tell a few folks. Research says if you tick someone off, they tell an easy dozen!
Business plan on the finances is critical, but so's the marketing strategy.