Great idea. To bad I dont have an EOS-M. Thinking of getting one with the 11-22mm, 22mm f2 and 70-200mm f4IS with EF-M. For my travel set up or a 70D with 10-22mm 40 2.8 and 70-200 f4IS.
I see that, either way, you are planning on getting the 70-200 f/4 IS ... in which case you are better off getting the 70D + 10-22 + 70-200. While the EOS-M is very good with the 11-22 lens, the AF sucks when it comes to 70-200 + the adapter. Also, the weight size advantage that you gain on the EOS-M+11-22 is sort of lost as you also need/carry an adapter to use the 70-200 ... and every time you change lenses, you need to change two things instead of one and it can get pretty annoying. I've have onwed/used the EOS-M with the EF-EF-M adapter, which was great when it cines to image quality but not at all convenient and not to mention the awfully slow autofocus with that combo.
The 70D + 10-22 + 70-200 is a fantastic combo, something the EOS-M just cannot match, be it image quality, low ISO performance, AF speed, tilt/flip & touch screen etc... the 70D is a far superior camera in comparison. Also, currently the AF in video mode of 70D is far superior
to any Canon DSLR ... when it comes to video the 70D makes my 5D MK III look ancient. If you can, try it at your local store to appreciate its video performance.