For my first brew, I'm going to keep it simple. I've been told that i need to add 2.2 lbs of DME to this kit, my question is, can i add more then that, say 3.0 lbs and would that improve the taste?
since you are already adding more DME than the recipe calls for I wouldn't add any more.
Put the excess in a sealed Rubbermade container. It never hurts to have some DME on hand. I have used wheat DME as a priming solution with some of my stouts to keep it from over carbonating.