I hAd a Vanguard youth 223, the trigger(2 stage.) Was one of the nicest factory triggers I've had on a hunting rifle. It was so nice I gave it to my granddaughter when she needed a rifle.
My Howa mini, trigger not as nice as the vanguard but I haven't thought about changing it. I put an aftermarket stock but went back to the original after working on it.
I've built on 5 Savage/Stevens 10/200 açtions into rifles.
Of all of them I really like building on a Rem 700.
Tikka out of the box should be good to go.