Companies like Thinktank and Lowepro have ranges of shoulder bags, of all slightly different dimensions, that will suit your purpose. The major limitation for what you are looking for will be the requirement to carry the 70-200 mounted - that means a significantly larger bag than having the standard zoom mounted and the 70-200 bare.
If you can, go into a camera store with the gear and try out some bags. You will very quickly get an idea about the size of bag that you need, and whether a shoulder bag will work for you. Comparing different bags from different manufacturers will be much simpler once you have done that basic inspection and know the dimensions that you need.