That all depends and the type of beat, your personal preference and the MC's
A Uptempo beat, a wild beat, or a energic beat could start with the Chorus if you want the beat to start on a high note... but it could also start with the verse if you want to have a build up... (of course that would mean that the chorus has more "energy" than the verses...)
A smooth beat would be the same... since it's smooth, if the chorus is smooth, you could choose the start with the chorus so the people can get in the groove at the very beginning of the song.
Bottom line... putting the chorus 1st will give the whole song the feel of the chorus...