I have a Savage 10FP with a B&C Desert Tan stock and Bushnell Elite 4200 scope that looks pretty decent too. This is my most accurate setup. I do not use this as a woods rifle as it is just too heavy for me to carry where we coyote hunt. I use a .243 Ruger all weather with a Sightron II 4-16x42mm scope. I like the Sightron line as I have 2 scopes and a pair of binos. I keep the scope set at 4x or 6x when I am hunting in the wooded hills around here.
As for as scopes, I have always believed everyone who looks down a scope, sees something different. I would take your son to a gunshop, you pick out 3 to 5 quality brand scopes in the price range you are looking in, and then let him chose what looks best to him. I did this with my son and it worked out great. He chose a scope that I would not have but it worked for him and he loves the idea he got to pick it out. I know he got a good quality scope because I did the first step in the selection process.
I think your idea on a Tikka rifle is a good one. My next rifle will be a Tikka T3 ss in 7mm-08. I handled a T3 Varmint rifle yesterday in 22-250 in a gunshop and they are slick. With a heavy barrel, I would not choose this model for a carry rifle but the action was very smooth and the stock was more than acceptable. A T3 lite should be perfect for him.
Good luck to you and your son.....