Only micro adjustments on 7D matters. I never need this function on my 60D, because I do tests when buying lens.
Don't listen if someone tells 60D is plastic. That's rediculous! there are no plastic SLRs - they all are metal inside.
60D is the best Canon choice for video. You can use Magic Lantern on it, but not on 7D.
Your lenses are too big and heave for crop, I''d advise to go for 5Dm2. so 60D or 5Dm2 - my Imho.