What exactly are you looking to do? If its long range precision, I'd say that you are on the right track, though I would spring for some better dies and a better trimmer. Also, for long range stuff you will probably end up wanting a way to turn necks, correct primer pockets, and uniform flash holes.
If its more about high round count, you might want to look at a Dillon, and a tumbler instead of the ultra sonic.
As far as the ultra sonic goes, I love mine and would never go back to not having one. It doesn't replace my tumbler, and its slow as hell, but it gets the cases absolutely squeaky clean inside and out.