well some of the dances need proper training so 3 weeks is better than just 1 week.
the Jive is a very hard dance to train, it's very fast.
i've been reading Georgia May's twitter, and she's gonna do a cart wheel in the Jive (very technical if it works, so fingers crossed).
Ainsley's Tango to Voulez-Vous should be a good song choice, and Natalie is a good teacher ( better than Gregg last year with Aliona)
i like a good Strictly Journey, Georgia May for example it's a dream come true for her.
a Jive to Meghan Trainor, good choice
i want to see a Paso Doble to Bastille's Pompeii
or a Rumba to the Coldplay song Magic
or a Rumba to Fast&Furious7 song See you Again