1 Song Mix + Master (+/- some co-production)

I have one song recorded + vocals and backing vocals. Although the mix is not cohesive and could possibly use a few "extra" elements in the instrumental production. Musical style is inspired by David Bowie and Gang of Youths. Orchestral heavy, somewhat progressive, indie rock.

Additional info:
I need the mixer to do some editing, time aligning and vocal tuning before mixing. I'll need you to master it too if possible. The song has somewhere between 10 and 30 tracks recorded that need mixing. I'm interested in working with a very experienced mixer. I'm an indie artist. I don't have a hard deadline for this.