Mixing

I recorded a Hiphop song in my bedroom studio using mostly sample audio. I have level my vocals and added a few effects to it. Should I submit it with the effects? I would like you to mix the song to give it the spark it needs. Feel free to make any changes to help the song shine. Hiphop/trap kind of feel. How much would it cost and how long is the turnaround? Any revisions included in the price?

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