Bad idea, you do have the nuts but you can easily get counterfeited on the river and have to split this pot, a flush card can also hit the river which may stop the villain from betting which also costs you money. Even if a Jack or ten hits the river and you dont have to split the pot, these cards will still dry up your action. So raise the turn right away and hope the villain has a set, and then cap it. Yet another bad thing about waiting to the river is even if a blank hits, the villain still may not reraise you with his set since he will feared you slowplayed the nuts on him. But when you raise the turn, he usually wont fear the nuts just yet. Also with a fish behind you on the turn there is still a decent chance he will call your turn raise, which means more money for you in the long run.