Good advice above.
I went through this same process about 4 years ago. At the time i had and still have a 75 Finnlight in 7-08. I wanted a 30-06 to match. So i found one at a decent price but wasn't thrilled with the 11 twist 20" bbl. I sent off the 06 and had a Shilen 26" 10 twist barrel in a #2 contour put on. I told the smith to true it and screw it. Turns out the action didn't need truing and the #2 contour fit the barrel channel perfectly with no alteration. Balances perfect and is within ounces of factory weight.
I tried the cheaper route with rings and bases. Don't bother. The Optilock rings and bases are the way to go. Heavy, but solid with no issues.
As stated, McMillan makes stocks for it, but my opinion, unless you are buying a synthetic to preserve a nice wood stock or shave weight, Sako stocks are about as ergonomically correct as they get. The Varmint stock mentioned above was very tempting.
Action is slick as snot and trigger is phenominal. No need to monkey with them except for pull weight.
Now, my intent was to keep this as a factory set up and not tac it out. For hunting purposes, I couldn't be happier. If your intent is to strip it down and turn it into a heavier tactical or target style set up, then i think there are better options. Sako TRG stocks do not fit these actions. I wish they did.
Depending on your hunting/shooting purposes, the 06 may be fine. If it isn't, choose the cartridge, barrel.. etc based on your intended use.
Good luck. Keep us posted.