12 Song album master.

Hello, I'm looking for someone to master my 12 song hip-hop album. I recorded and mixed it myself, but I want to send it to you as three separate stems, the instrumental track, my vocals (all overdubs and such included), and old movie samples that play out over intros, outros, and various sections of the songs. I'm confident in my mixes but I want to give you the freedom to adjust during your process as I don't have a lot of experience with mastering side of things. I also need radio, a capella, and instrumental versions of the final masters. I won't need to attend the session. The full project is roughly 40 minutes in length. How much do you think this would cost? Thank you for your time, Blake Naeth