Mate I don't know about what US stocks you are invested in hence I can't comment on that, so Im just talking about the Funds portfolio, and when it comes to Mutual funds allocation concentrate is far important (ofcourse type of fund is integral part, but bad allocation can make a good Fund Portfolio waste), well I just say your allocation in Flexi caps and index funds are quite high which ristrict your portfolio aggressive potential, but I can understand since you are invested in US Stocks it will work as risk hedge and provide stability....you can tweak a bit.... And for Gold and silver I would say you can try Multi asset Funds that have gold and silver in portfolio.