Ok, looking at your configuration and setup. I think that I can see where you might be getting confused. What I would do is setup X-Lights to work with a full Pixelnet universe. This would be the first 8 E1.31 addresses. This will give you a full 4096 channels to work with which is way more than you need right now but makes it easier to expand later. Once this is done, I would reserve the first 512 channels for DMX use. The purpose for this is that doing this keeps your logical and physical channel numbers the same which makes it much easier to work with them. You can set the DMX channel on multiple smart hubs to the same thing (channel 1 in this case) if desired and they will all work properly. Doing this will allow you to keep your LE's configured at their current starting addresses (1, 17, 33) and they will work properly regardless of what hub they are connected to.
I would start your first Pixelnet controller at channel 513. This also keeps your logical and physical channels at the same number and keeps them out of the DMX range. Remember, the DMX channels will also be sent out on the PixelNet channels as well. I would probably start with your DSC controllers (first one at 513) since they have a fixed channel count and then add the SSC's since they have varying channel counts depending on their configuration. With this setup, all of your hubs will be set to PixelNet Universe 1 and DMX universe 1 and all of the channels that you will use are the same number in X-Lights and on the controllers thenselves. You can't get more simple or easier than that. Good luck with your sequencing.