That’s the setup I’ve been using for the past week, a Senal shotgun mic, plugged into a 25′ cable, and into the camera. Actually come to think of it I’ve only shot a test video and played with the audio. Better than having the mic 8 ft away but still less than professional sounding. So I’ll give the DR-05 a shot. If it doesn’t work out I have 60 days to return it, but from what I’ve heard of it on youtube it sounds great (except for the few who don’t know how to record decent sound!).
I’ll update with my results when I have something to put up.