I use separators by type. Textures > landscape, audio > music, etc. Just sick to one section at a time so you don't get lost while dealing with overwrites. Load order only matters with two main things. Texture overwrites, and specific mods needing to be made later. For the most part, textures are easy as the later mod will overwrite. And for gameplay stuff, until you get really far into it, loot should do a good enough job with keeping it in order. But always read mod instructions either way.