Duoing provisionals with a bronze 2 friend?

A friend and I have been duoing for my unranked account provisionals and we are currently 6-1. My friend is bronze 2 and we have been matched up against anywhere from s2-s5 players. I am curious as to what I would have to finish my provisionals to get ranked s3-s5. Will duoing with him for the rest of my matches highly effect the outcome of my placement? pls help!