[DonRotolo]

The advice to hold off on buying anything is good.

You asked what benefits this kit can offer. The short answer is that if you need to develop something that uses the CAN Bus interface, this will help you do it more easily. Think of it as a small toolbox for CAN control of Jaguars. BUT, it is unlikely that FRC teams will be asked to develop the CAN interface; instead it is more likely that software tools (such as a VM for LabView) will be provided, and teams will merely have to parameterize (fill in the blanks) it to use CAN.

This would be an excellent question to ask Luminary Micro. Their sales support team answers questions like this every day, and if you identify yourself and ask a question, they'll provide an answer. (That's how it's done in the business world).