Well I kind of read though most of the info here.
Now Just how old are you? You don't have to respond. You'll see the reason why below.
How deep are your pockets, because you have hit the rabbit hole here.

If you don't mind spending thousand to start with, then the sky is the limit. Lets start with primers and priming tools. A lot of presses have a primer holder to start with. or you can go to PrimeRight priming tool. Presses I would go to RCBS, unless you feel like spending $1275.00 or so for an Area-419. Powder measure about the top of line is A&D Fx 120i. It's over $1,000.00 or so. There a level up from that and it's about $6,000.00. Anealing, a Bench Source for $600.00 or AMP for about $1,400.00. Annealing I feel is a must. It will extend the life of your cases, consistance neck tension. I would suggest something to cut your neck to thickness. That way you are not having the use a mandrel to straight the necks out. (that would be cheaper) Or a 21st Century for cutting thickness with different cutting heads. You will need comparators for your cases, and bullets. You will need to trim your cases. You can trim manually or get a Henderson Presision for cutting cases to length plus attachments, and that goes for others mention here. Die's I using Redding bushing dies, but have order a RCBS dies now. Both are good, but I staying with bushing die. I cut my necks for thickness. That take away the uneveness out of the neck and consistance thickness for release of bullet. I can set neck tension with bushing. Cases, you are cheaping out by getting brass from manufacture of tailored ammo. If you want the most out your rifle, you'll get Petersons or Lapua brass and there another too that are top of the line brass. (match is better) You will need to get several differnet bricks of primers to try and fine what work best for your load. Primer pocket uniformer too. Bushing for your bushing dies, they come without bushing. Seating dies I would get the type that can be mic-calibrated. Because setting your bullet to lands is the up most importance or getting that way. The dies can come as a package. Calipers, and a ball mic. A chronograph for about $600.00 for the new one out now. There is cheaper ones out there.
So for several thousands you are in. $5,000.00 to $10,000.00 range. There more I haven't mention either.