I highly recomend getting a copy of Lymans cast bullet manual, it will answer alot of your questions, especially the ones you haven't thought of asking
I would also start looking for wheelweights for a source of alloy to make bullets from. You simply can't get enough of those things, and if you come across 5-10 5 gallon pails of them, take all of them, going rate is between free and $20 a bucket, they yield ~100 #'s of cleaned ingots. If you get them for free, a case of bear has a way of providing additional lead in the future.
Lots of folks like to bash Lee equipment, but it is affordable and will make good bullets. Sounds like you'll be shooting lots of bullets, so I'd recomend getting six cavity molds, production rate is very high. If you're not sure about which style bullet you want to try, a pair of two cavity molds produces bullets in quantity as well.