Well, I own an A1U but I'm counting my pennies until I can buy A 5d(Why I'm on this forum). My thought is can your editing system handle heavy editing with 7d footage? What I do love about my A1U is the XLR ins and great audio metering. What I hate about my A1U is it looks terrible in low light. Your shots need to WELL lite to make anything look good from an A1U. If want to see some footage from A1U you can see here
http://www.swispro.com
I too dream of the day I can ditch my Camcorder and go DSLR