We're thinking of putting in wireless, RFID, Cellular, or Microwave
This is the perfect stage to be looking for a little guidance. Some of the crucial things to consider BEFORE purchasing anything is the placement of the radios and what you need them to do. Density and distance also need to be considered.
The best approach is to have Voodoo come in and provide some business analysis consulting. It is highly likely that your organization could see benefit from multiple wireless technologies (RFID, WiFi, WiMAX, I/O) implemented together. We would also work to establish a strategy for phased implementation.