"St. Peter was the chosen one of God to take the gospel to the Gentiles."
------ Nope. Even Peter would have disagreed with you, because he recognized all of Paul's Epistles to all of those Gentiles as Scripture, particularly Galatians 2:9 where we read: "When James, Cephas, and John ... perceived the grace that was given to me, they gave me and Barnabas the right hands of fellowship that WE SHOULD GO TO THE GENTILES, and they unto the circumcision".
Peter went to the Jews and Paul to the Gentiles and Rome.
Example: The Book of Romans
The Epistle is intended to serve as an introduction to a community with which the author, though he has not founded it, desires to form connexions (i, 10- 15; xv, 22-24, 28-29). For years his thoughts have been directed towards Rome (xv, 23). The Church there had not been recently established; but its faith had already become known everywhere (i, 8) and it is represented as a firmly established and comparatively old institution, which Paul regards with reverence, almost with awe.
Source: Catholic Encyclopedia
Now, that isn't to say he had no part of helping in the Roman Church, but he didn't establish it. St. Peter did.
Nope. Even Peter would have disagreed with you, because he recognized all of Paul's Epistles to all of those Gentiles as Scripture, particularly Galatians 2:9 where we read: "When James, Cephas, and John ... perceived the grace that was given to me, they gave me and Barnabas the right hands of fellowship that WE SHOULD GO TO THE GENTILES, and they unto the circumcision".
That directly contradicts the Book of Acts, IMO. St. James and St. Peter never made such an explicit statement as they were now solely responsible only for the Jews. Nor did St. John.
I tell you what I see though. St. Paul got really MIFFED at the Jews and said, "Your blood be upon your own heads; I am clean: from henceforth I will go unto the Gentiles!" Now that's in chapter 18 of Acts. Acts 15 is where James, John and Cephas "supposedly" give this ministry to the Gentiles soley to St. Paul.
Another piece of Bible trivia for you. St. Paul spent 7 of his years of ministry in jail. Who was spreading the gospel to the Gentiles then?
Did it just stop because St. Paul was behind bars?