Good thing none of ya'll are on Yonce's management team because your single choices/release dates
They probably won't have to send Partition for adds on Urban and Rhythmic. They should just let it do its thing there because by the time Drunk In Love peaks on Pop Partition will be pretty much dead on the other formats. Just let it naturally get a few spins on Pop if need be like Pour It Up did.
I go back and forth about Blow being next. Yeah, it would be following a popular trend, but I just can't imagine hearing "Turn this cherry out" on the radio.
Otherwise, for Pop/international markets Pretty Hurts would be the most logical choice next.