When you go buy a fishing rod in Holland then there are a few basic rules about the rod. The rod itself should be about 2feet bigger than your body length. If you buy a smaller rod you are limiting yourself with casting.
I'f you buy a bigger rod then you might injure your back on the long run.
My alround rod is an 8feet shimano catana with an action of 25-50grams.
works perfect for pike,carp and zander.