A great team is always essential, more so when you are partaking in a trade show, while on a tight budget. To supervise the show, you need to employ talented people who are good at multitasking. A multitasking team will do the job of many, without being too costly. Also, though you have an excellent sales team who can handle leads, ensure that there is a senior person on the booth who can customise solutions and make pricing decisions present at the tradeshow.
For example, if you see car ads, they seldom just talk about torque and capacity and turning radius. They talk about emotions associated with the car, the journeys you can take and the safety and comfort it will give you and your family, etc. Obviously the features are weaved into the story, but the story is what makes the emotional connect.