I have a Springfield loaded. I did some mods on the internals.
Getting an entry level gun and a reloader is a good idea. I bought the LnL from Hornady. If you are shooting pistol, the progressive is the way to go. A buddy bought the Lee progressive. Not good. He upgraded to Hornady after a few years, regretted the lost Lee years. Some folks think you need single stage to learn. Not so. You can make one bullet at a time until you understand the press, then make 5 at a time, 200-300 per hour.
I have a few .45 1911s and one 9mm. The 9mm is a great gun. RIA has them in 9mm. Mine is a Les Baer. You don't sound ready for that much $ in a gun. I know I wasn't for the first 5 or 6 years.
I discovered something about guns and reloading. If my ammo costs about 1/3 to make, or even 1/2 to make, I have real savings to apply to gun purchases. I've been reloading since 2004. I've run about 140,000 through my LnL. All my guns purchased since the press paid for itself have been free, and I've bought a few! The more I shoot, the more I save, the more guns I can buy.
Another good idea is to buy a .22 top for your 1911. I like the Ciener Platinum.
Here's my SA with both slides.
.45 slide
.22 slide
The change out takes a couple minutes. 200 .45 and 500 .22 will give you a long range session and will improve your shooting quickly.