The fact that she's doing the two best promo slots, SNL and Carpool Karaoke, shows she and Bobby know exactly what they're doing
Diamond Heart, Dancin in Circles, Million Reasons and Angel Down seem like they'd stand the best chance as singles tbh. Dancin' in Circles sounds like the most current/"trendy" track on the album and could do really well at Top 40, but Angel Down or Million Reasons are great ballads for the late fall/winter season when radio eats that up.
The fact that the label chose PI over DIC as the lead though
each era its been so hard to even pick one or two 
