Rich 357,
I am excited for you, soon entering the world of 1911s. The 1911 is my favorite handgun in the world. They are such great shooting machines. Don't ever let anybody tell you they aren't reliable. And because of their grip shape and excellent triggers, they bring out the accuracy in everybody. They have standard rifling so you can shoot what ever kind of bullets you want through them.
Here are a few little tips I have learned since owning one
-you don't need $30-$40 magazines (cough, Wilson) to function reliably for years, in all honesty they say 7rd GI type mags are the most reliable, just stick with good brands like chip McCormick, czechmate, Colt, Springfield, etc
-like that milspec Springfield model you linked, you don't need all the fancy parts to have a good shooter that feels nice. That milspec has primarily 3 parts that people don't like and wish to change out. Some people don't like the humped mainspring housing, I have never shot a 1911 with one so I can't say, although I think it would be better for larger hands. Also the grip safety, most people prefer the upswept beavertail grip safety that allows for a higher grip and slightly more comfort. And lastly the the sights, the milspec comes with small, low profile sights that are fine for the range but not so great for concealed carry or shooting games or combat.
The great thing about the 1911 is that there are thousands of parts options so you can fit the gun to YOU, starting with a base model Springfield would be perfect, if you have a steady hand and mind and can fit parts together. Or have someone else do it. I kind of want to black my 1911 out but that would require a new barrel and bushing, which is above my experience and makes me nervous about screwing up expensive parts. The thumb safety and guide rod will be no problem, but barrel and bushing are another story. Fitting the trigger was easy