thanks for your help. Yes, I am searching for some music I can go off of. Listening to it from that recording is too much because I don't know where to begin and end. Actually, I got a few things from the protopsaltis of DOWAMA to help me out and I'll see what I can do.
Your explanation as to why the Agia Doxology is chanted makes sense. According to the Festal Meanaion, during hte chanting of the Doxology, is when the priests have the procession of the cross. The problem is that we have never done that at Orthros but have always done the procession after the Liturgy is completed (which has become a parish custom). Thus the agia doxology is chanted to give the priests the extra time.
I love liturgics. I'm still going to try to learn the agia tone 4 though it's rarely used.