I see nothing wrong with that portfolio (or others on the portfolio site) at any time. So now would be a good time.
If you are comfortable with the asset allocation it provides, why wait? Who can say what gold (or anything else) will do six months from now? Gold might be down, but large cap might be up. That's the point of asset allocation: knowing that at any point one of your investments might be down, but overall your average return will increase year to year.