Skyrim HD 2K shouldn't be on the list of mods you have at the bottom.
The HD DLC is far worse than the 2K mod as it uses up more vram, increases loading times, and makes the game stutter for little to no beneficial visual gain.
The 2K texture mods are not the vanilla textures in a higher resolution like the HD DLC. They are custom textures at 2K and 4K resolutions that aren't as taxing on the vram as the HD DLC is.
I personally don't use the HD DLC. Instead I use a wide variety of texture mods for my needs and my vram usage still isn't as high as when I use purely the HD DLC.
Everything else seems good, but I have to say BOSS sometimes doesn't order mods in the correct way. So when installing mods, check the description because some modders tell you whether or not their mods should be at the bottom, or near the top of the load order. BOSS should only be used as a starting point, and not something to depend on =)