You are fine with that little rod. It will work just fine for the style of fishing you are doing. A size 20 pflueger trion would be a great choice! 4# line and you will be set! If you want, you could even switch to the shimano sienna 500fd, that is an equally good reel at the same price point.

Once you get into a 6-7' rod, you will want a size 25 pflueger or a 1000 size shimano.