I searched for the hardwares we need. Since we are more likely to use Jetson Nano, I made a list of corresponding hardwares to purchase and their cost. This can be easily changed to target RPi since most of the hardware are compatible. With Amazon, we can receive most of our hardware in 3 days of order. Additionally, I looked into the LED grids that we need. I did not find LED grids that fits our requirements. We need to build the grid from LED strips by ourselves.
Additionally, I watched the demo of many object recognition project targeting Jetson Nano and read the user manual. I think we have a good grasp on what it could do for us.