Jaguar, the camera doesn't matter, you'd be a fool to send the 60D back for a 7D.
It's all about the glass.
I have a Tamron 17-50 VC, Canon 50 f/1.8 and a Tamron 70-200 for my T2i, along with a follow focus, sturdy manfrotto tripod, 64 gigs of cards, battery grip, and lots of batteries because I went with the cheaper DSLR body. Don't forget to tack on another $300 or so on ND Filters.
I've screened stuff on Blu-rayshot on my T2i on a 10+ foot screen in front of a theatre of people, and it looked great due to the good glass used.
Don't waste your money on the 7D for the 1080p HDMI output during recording. A compact battery powered monitor will cost you a grand at least ; focus on learning the photographic language and getting good glass before getting a 7D.