@Hooked Now
You are going down a rabbit hole you will never get out of. You will no longer be in Kansas Dorothy.
First decide the calibre, you may be able to buy it off the shelf.
Decide on the action type and choose either action or donor rifle.
Choose barrel. Chrome Molly, stainless or carbon fibre and barrel profile depending on calibre and weight you want the finished rifle.
Choose the wood. The prettier the wood the more expensive
Choose stock profile
Find a gunsmith/ stock maker to do said work.
All this costs big $$$$$
The most important thing to have is plenty of patience as the job can take up to two years.
Is it worth it only you can decide.
Best choice is pick a rifle you are happy with that there's a lot of after market parts for. Brands like tikka,Howa, Savage and Weatherby Vanguard .
Theses offer a plethora of stocks, barrels, triggers, magazines, bolt handles and a lot of the work you can do yourself with a modicum of skill.
With these rifles you can usually get them in the calibre you want then add or swap out thing to personalise it
After having 5 or 6 custom and semi custom guns done I have come to realise there's an easy and hard way to do things the choice is yours so is the wallet.
If you go the custom route you will find a few of us at the mad hatters tea party. Turn left at the queen of hearts and you find us at the big table muttering gun related bullshit.
Bob