Jacqui is definitely headed for the exit.
I thought JJ was probably the weakest of the rest, but his story might get him votes. No one else was too bad.
It seemed unfair to have a couple's choice so early and cynical viewers might think it was to allow for overscoring and keeping the First! Ever! ss partnership safe from the first danceoff to avoid accusations of homophobia/racism.
I think anyone in the bottom half of the leaderboard is potentially at risk of being in the danceoff with Jacqui, so most likely someone with less of an existing fanbase. So could be JJ, but imo more likely to be Jason or Clara (unfairly imo, she was very good and undermarked), possibly Jamie.