I have no problem with a customized Tikka. It may not be my choice, I'm super-annuated and prefer more traditional designs. I have owned MDL 700's and moved on long ago, but I I got away from drilled bar stock types MDL 700, Tikka, Savage, Browning, most any affordable rifle now days is this type. I'm not bashing them. They all have reputations for accuracy, light weight and reliability.
The rifles I own now are Wby MKV, 340WBY, a hand me down, WBY Vanguard 300WBy, Cooper MDL 22, 6.5-284, and some pistols. The bolts and receivers of these and other older designs, Mdl 98, Mdl 70, Sako L61,Howa/Vanguard and some others were machined from solid steel billets. The bolts were machined, handles and all from a solid piece of forged steel. The receiver were also machined with an integral recoil lug or two.
I spent from 1967-2006 on the beautiful MS coast, was relocated after Katrina by my employer. Go back for spells. My point is that I'm a lifelong shooter and hunter. Started reloading for magnum centerfire in 1976. I didn't find a lot lot opportunity for magnum riflery locally. I appreciate your choice of chamberings. They might be much better suited to where I am now.
I assume from your choice of WBy chamberings that this will be a sporting rifle. What and where are going to hunt or just shoot? Powerlines or beanfields? Montana maybe?
On the subject of smith's. There is a very well respected gunsmith, that frequents this forum, that insists that Tikks'a are his least favorite work. I don't know all of his issues, but maybe he will see this and post. He's a neighbor of mine, lives over in Wyoming, a couple of hundred miles away.
You will get loads of opinions on what's the best. All of them and $5.00 will get you 16 ounce quad shot latte. Good luck and where are you in the great state of MS?