My suggestion regarding the dies would be to borrow a set from a friend or try some reloads from a TRUSTED friend to see how the standard dies form the cartridges and how well they fit in the chamber of your firearm. Check cycling to be sure. If o.k. with the standard dies I would avoid the small base dies if not needed. No need to stress any part of your brass if not necessary.
Try RCBS X-Dies for the 30-06 and 223. You trim your brass to min trim size once, fire the brass then set up the X-Die (a full-length sizer) on a fired case and then use the X-Die exclusively before each future reloading. The X-Die is different than just a full-length or small-base FL die. it manages to stop brass growth completely. Read a really good article where the author with a M1 went from 3-4 reloads to 11+ using the X-Die. So keep the loads less than max and see just how many reloads you can get out out of your 30-06 and 223 brass.
Graybeard was going to try the X-Die for us and report back. Many GBO forum members swear by the X-Die and there are a few where they did not work out. General consensus is a thumbs up for the X-Dies. X-Dies are available in both regular and small base, so you are covered either way.
Good luck, and if you go the X-Die route, report back sometime about the case life you are getting.