I have a Dillon 1050 and use a mixture of dies really. When I'm processing brass I size with a Dillon carbide sizer, swage (it's on the press), trim with their 1200B trimmer and then finish up with an RCBS case mate. When loading, my first station has a Hornady neck sizer, then around through priming and then powder with the Dillon powder measure, next is a Hornady powder cop die (I broke my Dillon powder check die--don't ask) then a generic Redding 223 seating die dialed in to seat and crimp.
The Dillon powder drop is plenty accurate enough for what you'll be using it for. mine has been +/- .1gr according to my scale. If you were loading serious, benchrest rounds you'd be hand weighting each one probably any how. Make sure you keep your handle throws consistent and the powder drop will be consistent as well.
I would run with the basic set up for a little while before you go changing stuff out (read: spend money) on other things or upgrades. Break it in a little and see how well it does for you. See what you like or don't like and that will help guide you to the gear that's right for you. The most accurate load I ever made was some 308 loaded with cheap Lee dies that resulted in a cloverleaf at 300yds. There are a lot of little gizmos and gadgets that will make a "match" round but for the most part they aren't really needed unless you're really looking into serious competition where thousandths of an inch separate 1st from 10th place. If that's the case, just sign over your paychecks to Sinclair International! lol!
There's a bunch of reloaders on here so if you got any questions don't hesitate to ask!