You can save a couple of bucks by buying an RCBS primer flip tray, they cost around $5.
I would recommend buying either a Hornady or redding seating die, redding also makes one with a micrometer on the top. Either seating die is a huge upgrade to the dillon die.
Powder measure, either buy the plastic knobs that go over the bolt, or one of the replacement handle / bolt combos you can find on ebay or other online places. It will make powder adjustment so much nicer.