Re: Upgrading from my beginner rig
Take from this what you want, as it may not apply to you or anyone else, and I am certain it is only one way to skin this cat. For me, this allowed skill progression, and spread out the financial outlay into more manageable pieces. I did not see any reason to lay out a few $K for the crappy skills I had when I started this journey.
My knowledge and skills are nothing compared to most guys here, but I am doing the same thing you are right now. I am upgrading my stock (beginner) rifle to a personalized "rig". Some may tell you it is a "build" until the smith work is done, Some may say it's "custom", but to me it is just my "rig". Here is the order and reasoning for how I am going about this process.
1. Base Rifle - Gotta start somewhere right? - You need to decide if you are doing Rem or Sav, then go from there.
2. Trigger upgrade, or adjust what you have. Cheapest off the bat accuracy improvement.
3. Start Reloading - you can tailor make the load for what your rifle likes to shoot. Second most cost effective accuracy upgrade.
Then you get as much trigger time while saving for the hardware upgrades. I do these as I get the cash for the next upgrade.
4. Stock - upgrade the stock if needed to what you are wanting. Hunting style, A2, 3, 5, whatever your style is.
5. Barrel - While getting comfy with your new stock of choice, continue shooting out your pencil barrel while saving for a bbl of your contour and bore choice.
6. Assembly - Smith to cut chamber to your dimensions and mount on your receiver. Now with the trigger time you have put in and the hand loads your new barrel shoots most accurately, you better have a pea shooter.
7. Optics - With your new system capabilities (loads, rifle, shooter) you will extend your ranges. For this you will need to upgrade your optics to the best you can afford. My next optic, should be the last one I ever buy. Especially once my wife finds out how many shoes it could have been.
8. Smith work - I put this last as my understanding of lapping the bolt, blue printing the action, etc get you minimal accuracy gains compared to the prior upgrades. This will probably be done when replacing the barrel again.
ETA: Good luck on your journey, this is fun stuff!