Trev wrote:
Post lip sync will be a pain even if you well up on Video
and editing so Forget the Separate devise.

That is the opposite of my experience. Even multi-camera
productions of live music are quite easy to "pull-up" the
video to match the audio track. Especially for short shots
such as the OP is suggesting, using a separate sound recording
seems like an excellent way of working around the problem of
a camera without a mic input. I use that very technique quite
regularly.

The Camcorder you have Is Not very good Quality.

But try it with really good lighting before deciding it isn't
good enough for what you need to do.