in going with this method, you will get the full power of Kali Linux (or your distribution of choice) depending on your model of chrome book the driver support may vary. You will have to research your model of chrome book and Linux distribution of choice to verify everything will work out of the bo...
Almost all of the official google chrome-books (See C720 series for an example) have a hardware write screw to protect the BIOS, To install SeaBIOS you will have to remove this screw, and in doing so you will void the warranty on your chrome book.
In doing this method, you will have to put your chrome book in developer mode, while not a huge downside, some security considerations will have to be given to that fact. Developer mode on most chrome books are insecure by design.
Following the steps given in the recommendation, this method is easy to revert or "Do-over" if you feel like you followed a step incorrectly; this makes it suitable for all experience levels to follow.