It seems to be a complete set. There is no drag on the reel, you have to put the resistance on yourself. It also says it comes with line, but it doesn't say what kind it is, that is pretty important when it comes to fly fishing because it helps to set the fly at the right depth for the type of fly you are fishing.
Another concern is that all fly lines cannot handle saltwater. If not taken care of properly, the ones that are not specifically made for saltwater can rot and lose their strength.
I also wouldn't jump right into targeting large blues right away, go after fish that are a little smaller so you can get used to fighting a fish on a fly rod, it is much different.
but i also some line that makes flies float. is that just a leader or do i have to respool the reel??
The only thing that really makes flies float is the fly itself. When you hear of a floating fly line, that line itself floats, but the fly attached at the end of the leader may not. The floating line is just to try to get the fly in the right depth in the water.
A 5/6 weight fly rod can handle ****tail blues and schoolie bass, just make sure the reel has around 100 yards of backing so that when you are first learning how to fight a fish on the fly rod you can afford to make a mistake and not lose all your backing and line.