There are gifts of the Holy Spirit not included exclusively in 1 Cor 12-14.
Since the church will be gone from the earth there would be no one else to speak in tongues.
But you don't have a case for prophecy and tongues ceasing now. If they are still here in the future, it does not make sense to say they cease, and uncease. If they cease and uncease, whose to say they didn't revive in 400 AD or the 1600s or 1800's or 1900's? Your theory of tongues and prophecy ceasing and being revived during the tribulation is based on nothing.
Among the gifts listed in 1 Cor 12 three are stated to end in 1 Cor 13:8 although they are still in operation in the apostolic church in 1 Cor 14. We could discuss the differences in the prophecies which are done away in 1 Cor 13:8 and the prophecy of 1 Cor 12:10 but that is more than a light discussion.
You are wrong in your interpretation. Every kindred, tongue and kind are equally saved by the blood of Christ but salvation does not change ethnicity. While the Gentile church is receiving the blessings God promised to Israel the church will not prevent God from fulfilling His promises to Israel which are specific to Israel.
Israel because of their apostacy cannot receive the blessing God has for them.