I agree with what Jim Watson said and if you have to pick just one reloading manual make it the Lyman's manual. I started reloading with the Lee kit, but I am now a devotee of RCBS. The Lee press was ok and I never used the powder dipper, I always use a powder measure to throw charges since it is far more adjustable. I found the Lee dies to be wanting in the quality department. The rubber O-ring in the lock nut never inspired confidence and I was always concerned that the die might not be in the same position when removed and then reinstalled in the press. I also found their powder through the expander to be a few thousandths of an inch out of round. I can't begin to tell you what that does to accuracy. I have tried Lyman, RCBS and Hornady dies and found all of them to be better than Lee. I finally settled on RCBS for all of my new dies and my press is now RCBS.
Since you are planning on shooting 200 to 500 rounds a week I would also recommend a progressive press. Single stage presses are great for beginners, those who reload very little and for precision rifle rounds, but for 200 to 500 rounds of 45 ACP progressive is the way to go. I am using the RCBS AmmoMaster press. These seem to be hard to find today, but were popular many years ago. Mine can be converted to a single stage press and has enough space between the die holder and the bottom of the press to actually reload .50 Browning machine gun rounds. I wouldn't go with such a large press if I were purchasing one today, but RCBS makes nice presses as does Dillon. Dillon is the choice among IPSC/USPSA shooters and the same probably goes for IDPA.
Yeah, polygonal bores don't shoot lead all that well and tend to collect lead at alarming rates. An alternative to traditional jacketed bullets would be plated bullets. These are usually swaged lead bullets with a copper plating on them. Ranier, West Coast, and Berry's immediately come to my mind. They cost a little more than cast lead, but less than most jacketed bullets. I have found the accuracy to be ok, but not quite as good as cast lead or traditional jacketed, but my accuracy tests have only been on Berry's bullets.