My only concern I guess is the af complexity on the 7 and lack of scene modes for initial hand holding until Im confident with it.
I honestly don't think the 7D's AF is that complex. Having so many points seems daunting at first but in just a day's use I felt it was extremely consistent.
Perhaps some can explain how the additional focssing options on the 7 can help for action/ wildlife over 60d in simple terms please. I believe it would give me a greater % of in focus shots but will it be that great a jump.
Yes, you're right in saying you have a greater potential
of having a higher percentage of shots in focus with the 7D but there's a tad more to it than that.
If you want to set the AF to work on a certain region of the frame, the 7D allows you to set the AF to focus on a cluster of points whereas the 60D only allows you to focus on a single point. As a result, the 7D is more likely to catch the subject in focus if it's in the same region as the 60D.
Whether it will be that great a jump or not in practice will depend on your settings and the subject. For motorsports photography, I'd put money on the 7D comfortably outperforming the 60D but with slower-action sports, I don't think there would be that appreciable a difference.