It’s sad when people pick Holy Week as the time to try something new. Don’t get me wrong. Commentators are allowed; however, having been through a few, they wind up taking longer explaining the ritual than the actual thing. When the Holy Father went to Brazil, a commentator was used. He was rather annoying and very wordy. His comments were longer than the readings and the ritual. It drove me nuts. Even Pope Benedict looked rather peeved.
Now, it’s best to familiarize yourself with what the Church expects during the Sacred Triduum. Because the document is fairly long, here is a link to Paschales Solemnitatis, the circular letter that gives clergy and the faithful the do’s and do not’s for Holy Week. I have found this document very helpful.
adoremus.org/PaschaleSolemnitatis.html#anchor260407
While the document doesn’t speak to having commentators, this point is rather telling:
I highlighted this particular point because the best venue for explaining what goes on at this liturgy should be the homily. Perhaps if you show this to your pastor, it might persuade him that Holy Thursday is not the best venue for Mass.
**There is something else that you might consider. In my old parish in Austin, we had booklets that we used for the Three Great Days. Because the Paschal Triduum actually forms one complete liturgy, we had incorprated all of the rituals into one booklet for the faithful. There was a brief explanation about the rituals (including the procession of the blessed oils and the washing of the feet). There was also instruction regarding appropriate decorum wherein the faithful were exhorted to leave the Church in unborken silence after the procession of the Blessed Sacrament to the altar of repose. We also stressed the need to enter the Church in unbroken silence on Good Friday and to leave in unbroken silence. This really helped out a lot and made Triduum a most prayerful experience. **
This was one of the ideas I brought to our Cathedral. It worked really well. However, when the new administration took over, decorum and liturgical appropriateness went out the door.

Hopefully, someone can bring that back.
For my part, I’m going to give my pastor a copy of Paschale Solemnitatis.
I hope this helps you.