cash - the only "devaluation" of the US dollar will be in relation to the yuan. As far as any other currency is concerned, it has already been discounted. The dollar (and stocks) will rally in anticipation of an improvement in the US balance of trade. Popular opinion that it will cause a jump in interest rates, is a myth. The Fed will continue to maintain a low interest rate environment. It will be great news for the economy because it will greatly reduce the trade in-balance, and will create new jobs to fullfill the demand for US goods and services in China. Let's face it, if it were not a good thing, the Fed would not be persuing it in the first place!
The US is the largest consumer of energy in the world!... Anything that stimulates the US economy, will further increase the demand for energy. JMHO, we'll see.