Hehe, thanks for the attention and discussion guys, allow me to fill in some gaps
The priest is healing.
The dmg meter in the screenshot is overall, including the mounted part, and yes, everyone helps aoe, even the priest. Starfall rocks (as long as it lasts anyway).
Paletress was indeed not part of my first clear of H ToC, though I got her and killed her when I did it again two days later.

Since then I've also cleared H Old Kingdom, which I found the last boss to be almost as challenging as H ToC lol. And as you may have noticed in the achievements that have been linked, I also got Amber Void so far from H Oculus

I am indeed trying to see how fast i can get Glory of the Hero on this team without outside help ^^

Feel free to ask specific questions and I'll do my best to answer.
If there is enough interest in it, I could post a more detailed description of my keybindings and macro setup.
Addon list etc. Any addons you want to know what is, for example?