JKD is a great impressive style however we need to remember that The guy doing it was Bruce Lee. The things that he advocate can be very effective however also you also need to realize that they require a bunch of training and practice to get good at them and be productive at it. For instance the stop kick to the knee is a devastating move but you have to have pinpoint accuracy to use it efficiently. Also one of his primary weapons was a side kick also something you need to be very fast and very precise with. So read his stuff practice and there are great things that you can learn in strategy theory and technique however don't go trying it out until you are very good with the technique. Until then its ok to throw in some of the basic principals but its best sticking to what you know well for the time being.
"The fat man flies at midnight"