If you're kegging, why not? Getting it cold and carbonated ain't gonna hurt it. I just put a Wit on (regular Wit) that spent the same time in the fermentor. If it tastes good, there's no reason to keep them sitting around taking up fermentor real estate, IMO.
You palate is your best guide. If you think it needs a little more time, then give it some more time, but if it tastes good (it will take some "practice" to start figuring out how flat, warm beer tastes - but off-flavors are still usually readily detectable) then get it packaged. Proper fermentation with healthy yeast is the best to stave off these bad flavors from even forming, so keep those in check, and I think you'll start finding your beer is less "green" sooner.