Just use the Perfect Terrain LOD mod. It provides an xLODGen output that’s 90% as good with none of the work. You’ll probably still want to run TexGen and DynDOLOD, but they‘re easier to use.
I highly recommend this mod. It’s an xLODGen output for several of the most popular texture overhauls (Noble Skyrim, etc.) and saves a step in the LOD-generating process. Used along with TexGen and DynDOLOD, it produces really nice results.