Welcome! You're in the land of kiwis, and I'm in the land of crabs.
As far as the advice about getting a Dillon press instead of another Lee, which do you have more faith in, your own experience or the urgings of others? Dillons are great machines, but before deciding on a brand, I read a great deal about reloading in general, presses, accessories, etc., and pestered a lot of reloaders about what they used and why. I finally decided on a Lee Classic Cast Turret, and I haven't regretted it for a moment. It works very well for me. Your mileage may vary, of course. Get what works for
you.
As for gun choices, borrow or rent as many as you can get hold of to see which ones you like best. I see nothing wrong with anything you've mentioned, they're all fine firearms.
If you get a Lee Pro 1000 and can't get CCI or Remington primers, get the Lee Hand Priming Tool, which can safely use any brand of primer.
Cheers!