Unfortunately, many of your statements here are actually common misconceptions of what is taught by Roman Catholic, Eastern Orthodox, Anglicans/Episcopalians, and other sacramental churches.

First, it is NOT taught that Christ is sacrificed again at the mass... rather, it is believed that at mass, one enters into the one, eternal sacrifice made by Christ on the cross. Just as "the Lamb was slain before the foundations of the world", yet Christ did not actually die on the cross 'til 2000 years ago... so the work of Christ, His one and only sacrifice, is eternal. It is beyond the bounds of time. And so, at the eucharist, one enters into that eternal work.

Second, you say that the concept of priests today is found in Tradition, but not in the New Testament. The word used today for "priest" is actually a transliteration into English of the word "presbuteros"... usually translated as "elder". As the word went from the original Greek into Latin then into English, this is what developed. It is a different word than the word used to describe the priesthood of all believers ("Hierateuma" found in 1 Peter 2:9). This office of elder/presbyter/priest is clearly seen as holding a position of leadership/authority in the church. Paul specifically says that these presbyters should "rule well", and that these presbyters were to be ordained in every city.( Titus 1; 1 Timothy 5; 1 Peter 5)

As to sacraments in general... Sacramental theology is clear that a sacrament is a "visible sign of an invisible grace". It is not the "visible sign" but the "invisible grace" that is what is effective. Baptism, for instance, without faith is merely getting wet. However, when one has faith in the saving work of Christ and in baptism as a means of expressing one's acceptance of/cofession of one's faith-- then baptism is the visible sign of salvation. The same is true with every other sacrament-- they are visible, tangible means of communicating an invisible, intangible grace.

While I disagree with many things that the Roman Catholic church teaches, I feel it is important that we do not misrepresent their actual teachings. Doing so actually belittles our own credibility.

Blessings!