IMO the most important feature of a tripod is the head. How smooth can you pan and tilt as you’re operating? How steady is it when you come to a stop? I couldn’t tell from the website anything about the head. I suggest you actually put your camera on the tripod, test it out, and see how it feels.
I haven’t used the Sony wireless package, but the specs look very good for the price. You get diversity, frequency selection, variable rf output and a lav. The only downside is the unbalanced miniplug output. Just be sure you get a very high-quality jack and cable to go to your camcorder.
Again, I’ve never used the ECM-678, but its specs look good. I suggest you should think about getting a decent boom pole. You can mount the pole on a C-stand with a mafer clamp as long as the interviewee isn’t going to be moving around. This will let the interviewer concentrate on interviewing not holding steady a handheld mic.
If you’re looking to do serious sound, you’ll also need a serviceable mixer. However, that won’t happen with your current budget. Perhaps you’ll work with a soundman who has a mixer in his package. If you’re not experienced with sound, definitely hire a soundman (at least to begin). He or she will save you a lot of pain later.
John
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