Starter setup for video
... with handheld. If you're recording sound the camera mic wont cut it.
If handheld, you might want to consider also some type of stabilization (glidecam style or shoulder mount or some DIY variant). If not handheld, you need a solid tripod with preferably a video head if you intend to pan while shooting.
For sound, an external mic is one option. This might also require a small pre-amp, depending on what mic you choose. Alternatively (and possibly better) you could use an external recorder with a good mic built-in and/or added to it. The later will allow you to maintain an uninterrrupted sound track even if you have to start/stop the camera(s).
If you have to record a longer uninterrupted sequence, you might need another camera that can record from another angle simultaneously so that you can do edits of your main camera. But for the purpose you listed as your first assignment, it might not be required.
And then you need some practice as well. It's probably a good idea to do a couple of test-runs with a willing model somewhere on your own premises. I'm still relatively new to this part of the game, and still realize some practical challenges I hand't thought out in detail when doing something new
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