Dave,
No problem. The RCBS dies are fine, but a lot of this just comes down to personal preference. The real question here come down to what you're loading for. If it's for an autoloader, you'll definately need to full length size (always, everytime, without fail), and may want to consider Small Base dies. They may or may not be needed, but won't hurt a thing if you choose to use them "just in case." Top Cat mentioned issues with lubrication, and that's a fact. I personally load a lot of my competition ammo on progressives, but I do the sizing, trimming and other prep work on a single stage before the cases ever get near a progressive press. In essence, all I'm doing there is priming, charging and seating, so you might call it a semi-progressive operation.
What kind of rifle are you loading for here? Might be able to make some other suggestions with a bit more background.