Welcome Biker Julie and Good luck - as the many folk here are pro and have committments . . . also it's not clear where this Run start/stops and where the cameraman/woman is stopping-over, or is this not a road-trip across several counties?
It will have to be someone with biking experience, maybe their own bike too.
Presumably you are hoping for a 1hr DVD showing the work of the Charity and the various helpers . . . who else will buy the DVD. You also have to consider copyright if you expect music to be added. Good music costs.