Buy the Pro-1000 press setup for 38 Special/357 Magnum already (90636).
Buy a 3-die carbide set for the 9mm (90509), the 45 acp (90513), and buy a Lee RGB die set for the .223 (90871) and a Rifle Charging die (90194).
Buy three extra 3-hole turrets (90497).
Buy the Lee primer parts kit which includes small and large primer slides, punches, and springs and a spare primer flip tray (90660). You'll have all the small primer parts with the press already, so the extra small primer parts in the kit are great to have for spares, and the kit costs as much as just buying the large primer parts separately.
Then buy the #19 shell plate (9mm & 40 S&W) (90669), the #2 shell plate (45 auto) (90652) and the #4 shell plate (223, 380, 32) (90653).
Alternatively, you could skip buying the #2 shellplate (90652) and the primer parts kit (90660) and instead get a #2 Shellplate Carrier Assembly (90645) which will get you the #2 shellplate and the large primer parts and all the shellplate carrier parts. This really speeds up caliber conversion.
Buy the shell collator funnel (90667)- it is worth the money by far.
Buy the Large Case Feeder complete kit (90658) which includes the correct "Z"-bar for the 45 and an extra set of tubes for spares. The 223 will work with the 38/357 case feed parts well enough to not need to buy it.
My Pro-1000 setup includes a complete assembled shellplate carrier for each major caliber group, already setup with the proper case feeder parts, and each major caliber dies are in their own turret and has its own Autodisk measure already setup, ready to drop in. A caliber conversion takes me maybe a minute and I don't have to retime the carrier since the shellplate is never removed.