You would expect Bourque to get that line going or are you just putting all the whipping boys together? Bourque is playing really well but I wouldn't put him in a situation where he would be relied on to carry or get a line going and risk him regressing to last year's model. He is playing really well feeding of the transition speed and passing of his current line so I think he just just stay where he is.
I would put Patches with the kids and put Eller back on the LW for DD and Cole. The last game Eller played LW for them that line had 3 goals but the next game Patches came back and they were split up. I would go back to it and see if it was a fluke or if there is some chemistry there.
I remember Pac-Plek-Gio working in the past. The DD line I made was more of a result of that. I do like your idea of putting Pac with the kids/Eller on the DD line though