That “nest post” changes nothing. The twelve were first sent to the lost tribes of Israel. Paul was first sent to the Gentiles.
About the time of Paul's vision, Peter was preaching to Cornelius. So I usually give Gentile "first contact":) to Peter. However, the ministry of Paul was clearly defined to the Gentile nations. And where there were Jews, Paul preached to them first and some came aboard and many did not and we see two instances of Paul proclaiming he would now go to the Gentiles.