At this point you have probably had hundreds of post. I have some of everything. If I was doing it over again I would just go green. RCBS and readding. I have had issue with hornady shell holders not being the same thickness on each side. Best bet is buy a RCBS rock crusher kit probably can get them at Wally now I think that is the ones I seen there. You will need a brass trimmer. Spend the extra and get at least a hand turn that acts like a mini lathe. Doing it with the Lee trimmer u use with your hands can get hand cramps doing like 50 plus pieces of brass. I can go on on but I'm sure there are plenty of good post already. Also start with someone that is already doing in or there are plenty of good vids on the process.