In 45 acp I like the 230 gr Golden Sabres, the 230 gr Ranger T, and the 230 gr Gold Dot. The important thing is primarily finding which round is most accurate and reliable in your pistol. Out of a full size gun, most premium JHP rounds will perform about the same. Use the ball ammo for practice. Nice thing about the 45 is that it will cut a nearly half inch hole even if the hollow point doesn't expand. Good penetration, easy to control, and with the Ranger T it will expand to nearly the size of a quarter. I see no reason to alternate different loads in the magazine. As far as lubrication goes, be sure to only use the appropriate amount on the correct locations. On a 1911 I put a small amount of oil (I use FP10) on the slide rails, a drop on the barrell hood, a drop in the bushing, and a drop on the barrell link. Every once in a while I will detail strip the gun and add a small amount of tw25 grease to the inner workings of the hammer and sear. I do mean a small amount. You do not want oil in the chamber, as oil has a nasty habit of killing primers. After running an oily patch down the bore while cleaning you really want to follow up with a couple of dry patches. It will look dry, but trust me, there is enough left to protect from corrosion. Most of the time if it looks oily, there is too much oil (exceptions would be high friction areas such as slide rails, but even then it is easy to use too much). Too much oil attracts dust and debris which will form an abrasive slurry when the action is in motion. As far as quality products go, I really like FP10. Miltech is very good as a lubricant, but is protective qualities aren't as great (still not bad though). Breakfree is pretty good stuff. I also know people who swear by synthetic motor oil. To be honest, just stick with a recognized brand and you will be okay. WD40 and 3 in 1 are bad choices.
Good choice on the pistol by the way. Springfield gives pretty good quality for the dollar in my experience. You probably couldn't do much better with a box stock 1911 without significantly greater expenditure. I had one for a while that I traded for a Colt Commander. They got the better end of that deal. Avoid the temptation to swap parts on your gun and add do dads and thingamajigs at least until after spending plenty of time putting lead down range and training.
