Do a hard save. Go to the console and hold the xbox button in until the console shuts off. Then after 1/2 minutes, restart the console and you should get the green screen. This will clear your cache and you should have no problems then. It also gets rid of the seam. There is no correct load order for the xbox will load it. If you are using the unoffical patch, make sure it is at the very top of your mod list and that there are no mods above it. That is the only mod you have to worry about whre it goes. Hope this helps.
I think I like the vanilla body more and all the seraphim mods svck anyway. But yes, I had this problem too, drove me nuts for two or three hours trying to solve this problem. It's so wierd how much more stable Fallout 4 is compared to Skyrim.
There is probably going to be a period of time where many of the console mods won't work properly. Usually the mod authors fix the errors quickly and you can continue using them after they have been updated.