Thank you for the feedback. This was essentially the same idea I had.
It should be interesting to see the difference between the cards (old/new) in a real world video environment. When I built this system some 5 years ago or so, it was perfect for a dedicated video-editing machine. But things move on, and with the change from NTSC to HD1080p, it can’t even play it let alone edit it. So hopefully the new card will at least let it be a raw footage review machine.