I'm concerned a tango-rumba might not be a crowd pleaser
Mostly for the rumba element which no-one really likes and was only executed well (imo) by the old pros and some of their partners.
Are they re-dancing their samba as judges' choice? That's a bit concerning too as I don't think it made a huge impression on the public first time round.
I'm sure one of the other couples mentioned a slightly dubious dance/music choice/repeat dance for their showdance but I can't remember what it was. I thought it might cost them the final.