I recently swapped a 60D for a 7D cause I wanted the better AF system for wildlife (BIF mainly) and aviation but for your needs a 60D will serve you well. My experience is very similar to John above where I find the 7D to be more 'noisy' from ISO 800 upwards while I used the 60D up to ISO 1600 + with no problems.
From your info above it says you have a 5D2, which is probably the best backup you could get, but if you've sold the 5D2 to get the 5D3 (like I did last year) then a 60D would be good.