Whatever you decide on, get yourself one of these... It's worth the expense.
https://www.mightyarmory.com/products/copy-of-the-magnum-100-universal-decapping-die-for-all-presses
As for scales, balance beams are good to have around because they function without electricity. However, they're not quite as accurate as a digital scale when it comes down to serious precision loading down to 1/10 of a grain. If you go with a digital setup, and stick to extruded rifle powders, then I suggest the Chargemaster 1500. Pricey, but worth the investment. If you want something that's half manual and half digital, then getting a Hornady Quick-Trickle and a good digital scale like a Gempro setup where you hand trickle each charge, that's also a very precise way to go.
Dies, I prefer Redding over RCBS, but have lots of each, and they all work good. Also, a way to make precision ammo, is to buy a shell holder for each individual set of dies, and do not mix them around. This way your die set is adjusted perfectly to that shell plate, in your press. When it comes to loading precision ammo, consistency is key in every aspect.
Do yourself a favor and get some Imperial Sizing Wax, and DO NOT use Hornady One-Shot spray! That stuff will get brass stuck faster than anything. At the minimum use 98% alcohol and 12:1 lanolin mixture that you mix yourself.
Get a good set of calipers. I don't recommend skimping on money in this department... You'll find you use caliper for a lot more than just reloading. I use the Starrett 799A-6.