It isn't a usage rights ask, and it isn't the file you're about to get. Before the offer goes out, settle who that second post would stand in front of and whether its sound is licensed to run there.
Tell them where the sound can come from. On a sponsored post, the only sounds TikTok itself makes available come from its Commercial Music Library, and anything else needs rights your side gets separately. A track name belongs in the brief in two cases: the track is part of the meme format viewers recognize and is a sound this video may use, or it is the one sound licensed for everywhere the video will run. Check every placement off TikTok before it runs — ideally before the creator picks a sound.
Ask for the raw footage only when somebody on your side could cut it and a line in your plan needs material that is not in the posted video at all. Holding the files is not the permission to reshape them.
A camera model answers the smallest part of what you are worried about. One ask a brief can make does need more than a phone, and it is cheaper to find before you book.
The appeal is a clip somebody says already stopped a scroll. What comes with it is whatever that clip says about your category — a sentence nobody on your side wrote, and two more things the brief has to name.
The count under somebody else's video is a fact about how far it got. What decides where the campaign starts is two readings and a free check, and none of them is the count.
An extra post nobody agreed to is a second purchase. Two things decide it: whether it carries anything the first one didn't, and what you can put behind the ask.
A message can't move a date on somebody else's calendar. Send one to carry what they can't post without, or to get an answer that changes a move still open to you.