Boy..."need" is such a subjective word when it comes to reloading! You will find as you get further and further into reloading that the list of items you "need" will grow
However, everything that has been mentioned here is a pretty good start. Sounds like you almost have everything minus a powder trickler and a set of good calipers.
I would also suggest using Horady One Shot lube. I've never had much luck with the standard lube pad.