A. So please elaborate:
1. what is the subject of your Masters?
2. at what university are you doing it?

B. Priests preside at the Eucharist as delegates of the bishop. The bishop remains the "ordinary" minister of the Eucharist.

C. It is the Church as the Body of Christ who offers ... Yes, this involves the ordained minister who is the guarantee that this is Body of Christ, Head and members, but this minister is "called from among the people of God to serve".

D. CCC
1376 is about consecration, but does not say that "priest" is the agent of this
1377ditto
1378 only mentions consecration by implication,  ... but again no mention of the priest as the agent of this consecration
1408 as for 1376 & 1377
1411 insists on the  presiding minister being a validly ordained minister and here seems to assign "consecration" to this minister
1413 as for 1376 and 1377 and 1408
So out of 6 of your quotes, 5 are irrelevant.

Frankly, I pity whoever is supervising your Masters.