I saw my show work for the first tonight using a setup very simular to yours. I use a iDMX for my 2 Lynx boxes and I have pixelnet running -working.
A couple of items that i stumbled with. When defining lighting network, have LOR as the #1 network type and pixelnet as the #2 type in order.
Also, make sure in lor sequense channel mapping that you toggle for multi -network.
I am no expert, I stumbled along until I got it working.
Also updated to xLights c. Can't saw I saw a improvement but the not connected was nice to trouble shoot with.
I set the iDMX start at controller 20. I had 3 Aethers and 2 LE and the all worked great.