Yeah, primary dry hopping is fine, but you probably don't need to do it for two weeks. Try one week for starters.
I am sure someone will say that dry hopping before fermentation is complete (which it might not be at 1 week) will cause the yeast and CO2 to scrub out some of the hop aroma. This is not a problem. Just add more hops. Try it the first time and take some tasting notes. If you want more dry hop character, add more next time to the same recipe.