I believe hard money should represent 20% of all money
Gold is not "hard money". Gold is an element which forms a yellowish colored shiny mineral.
Gold is not money, but merely a commodity. As such it is no different than corn, oil, or fresh concentrated orange juice.
At present gold is traded at roughly twice the price its fundamentals support which is its manufactu ring costs...H istory dictates it will return to the fundamental price. That could occur in the near future.