You should watch some great stunt videos (From ATS, WH, TMS etc) to get some ideas on editing. I guess you're new to the game or at least haven't been doing it for so long, so I can't say anything certain about your stunting, as I told on the editing, check out some of the great videos, there are so many out there. Use fraps for recording your stunts. The song was really great, ATS used it before, but it was worth using one more time.
Stay active, keep videos coming!