Need 4 tracks mixed/mastered to start

Standard starting rapper shit, 1-2 tracks of vocals on pre-made instrumentals. Closest genre would be like sad boy stuff but not so whiney and more 90's style rap?. Plan is to make a demo EP and shop it around to labels up my alley not sure; I haven't done this before and have just been stock-piling material 'till I felt ready. Thanks for your time!

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