Need soprano and light alto...

I'm ready to turn a bunch of self-produced a cappella tracks into an album on CD Baby / Spotify, but some of my soprano vocals leave a lot to be desired. Do you do that part too? I'm reaching out because of your a cappella experience, and the fact that you're in Boston (near me) is a pure bonus.

Additional info:
The song has somewhere between 10 and 30 tracks recorded that need mixing. The tracks are cleaned, tuned, and and the song is ready to be mixed. I'll need you to master it too if possible. I'm hoping to find a good mixer that can work with my limited budget. I don't have a hard deadline for this. . I'm an indie artist.