I use 2 of:
https://smile.amazon.com/gp/product/B06XCDN92YAnd I have no issues. Though the cables got bad reviews.
I use one computer with a very fast GPU. Calibration is the difficult part. Use this:
http://docs.ipisoft.com/Dual_Azure_Kinect_SamplesI personally used a mag light. It was just a very powerful LED flashlight I already owned. It worked much better than trying to calibrate with the board. I also have 2 (very, very cheap) tripods. The power cables are also very short and you will need extensions or plugs for each.