Nice pics streetsandtheaters. lcb if you shoot similar pics then get the 100-400 f4.5-5.6 Big White or wait till vs2. If it doesn't get announced in early 2014 then get vs1 when Canon Rebates are out. Not only will it cover almost all focal lengths that you will need for BIF and wildlife you will get a work out carrying it around.
We bought my wife a 70D and she loves it. She hasn't had it long enough to tire of the 18-135 lens that came with it. You should go body only as you have those focal lengths covered already. I did a search for 70D for sports and haven'tread enough to know how well the 70D is in AI Servo. It is a very good camera and so is my 7D. I get good pics of BIF 7D. My wife has taken a few pics of BIF but hasn't set the camera up to use AI Servo yet.