[Arturo Celleri] “and CAM1 to HDV (only option via firewire”
I believe you can record ProRes 422 from HDV via firewire. Chris Poisson wrote a tutorial here at the Cow a while ago that outlines this procedure. At the same time, I would record to tape as a backup.
Given the mixed formats, if you can standardise on ProRes 422 that will give you the cleanest post workflow.