Sounds like a perfect application for a single stage, or even better, a Lee Classic Turret. Setup a turret for each load and you can easily sit down, setup the press and crank out a box of 50 of anything you like in 20 minutes from beginning to end. 25 tops.
Thats how I use my LCT- I make 50 or 100 of a bunch of different loads/calibers at a sitting rather than crank out the same thing over and over. its less boring to me and it is so little effort to swap turrets and charge the powder, disk and primer type that I barely lose any time (maybe 2-3 minutes to change from one load to another, max)