This is true up to a point. There is such a thing in this dispensation as a racial Jew (1Cor.10:32)
When the Jews rejected both the Kingdom of God and Heaven as offered by Christ, the Kingdom was given to a new 'nation' the Church (Matt.22:23) and the Kingdom of Heaven (the literal, physical reign of Christ on earth) held in waiting until the new 'mystery'(Eph.3:3) body(Eph.1:28) could be completed. (Rom.11:25)
When Christ returns He will write the law on their hearts so they will be both spiritual and racial Jews (Heb.8:8, Jer.31:31)
I agree with everything else you said. The best work on the subject is George N.Peters, The Theocratic Kingdom (3Vol.)
Well, there you go again with two kingdoms. Can't you understand that there is but one Kingdom referred to as the Kingdom of Heaven/God?? You stated once that Matthew used only the term Kingdom of Heaven. Maybe you should check your Scriptures. See Matthew 19: 23 & 24. He uses both terms interchangeably. Now note Luke 18:24 & 25 - Luke uses only the Kingdom of God to state the same thing Matthew stated. Buddy you are going in circles.
There is but one Kingdom and it was instituted at the first advent of Christ and the Jews of that generation that did not repent and believe missed it. And those of this generation that do not repent and believe on the Lord Jesus Christ will miss it's comsumation at the second advent of Christ.