There is an inherent problem with the guy selling a rifle (the 30-30) he won't let you shoot first.
With that said I personally think an SKS is probably one of the worse choices of hunting weapon you could possibly give to a novice hunter.
With all the thousands of possiblities of hunting guns why would you limit your choices to those two ?
I have a post 64 model 94 Winchester I'd let your son shoot til you ran out of money feeding it....I don't even know you.