Backup/ accent vocals for song

I have recorded the verses of a song (genre, christian rap) and fine tuned the production instrumental to accommodate some nice chant or background vocals over the hook, and tiny splashes throughout the song. You obviously have to just freestyle some beautiful samples i can lace throughout the song that are not competing with the verses and can really feel melodic!!! I will attach a rough version of the song for you to listen to. I do have quite a fast turnaround requirement and would need something finalized by Saturday. Sorry for the notice I will make sure compensation helps balance out this type of demand.