For the reasons you mentioned (Capital interdependence) and for the fact that a one on one conventional war with China would probably be the bloodiest war in American history I don't think they'll start a war with China. This means they are going to find a weaker country they think they can push around. They might not invade the place but they'll start saying shit like 'we need to get tough on Venezuela/Iran/Cuba/Syria/[insert enemy of American hegemony here]', though I could see the ghouls deciding to do some shit like invading Haiti or Venezuela or intervening in Syria. I think the most likely thing America is going to with China is just start beating the drums of war as loud as possible without having to actually commit to something that could lead to a full on war. This might be more ships in the South China Seas, closer military cooperation with Japan/India/the Philippines/South Korea(though I don't see how that could be any closer), hoping to get a response from China to paint them as the greatest threat to the world, thereby finding a new justification for giving unlimited money to the military industrial complex, as now the War on Terror is kinda over.