I sure wouldn't start with a progressive! They can be touchy and complicated for someone just starting the game.

Also, the 45 auto is not the easiest cartridge to reload for. Most auto pistols are difficult and some can be devilish. Which is NOT to say you should do this. The problems you will encounter along the way are just part of the learning curve and when you can make ammo your 45 loves and feeds reliably, you'll be ready to load anything. A single stage RCBS would be a great starting point. Many happy reloaders never go beyond this point.

Word of advice. Get a TAPER CRIMP die for the 45ACP when you buy your press. Would suggest Unique as best powder for your .45. Let us know if we can help.