MODS: Environment and Weather

 Enhanced Lights and FX (https://www.nexusmods.com/skyrimspecialedition/mods/2424)

• When installer runs:
• Select Main Ambience -> ELFX Enhancer
• For exteriors, select ELFX - Exteriors and Enhanced Ice. Don't select Weathers
• Select both SMIM patches
• Select the No Player Homes Patch
• Select the Torches option.
• Load Enhanced Lights and FX last.

ELFX Fixes (https://www.nexusmods.com/skyrimspecialedition/mods/25498)

•     Leave defaults as-is.
•     Load after ELFX.

ELFX Enhancer Brighter Lights (https://www.nexusmods.com/skyrimspecialedition/mods/16618)

ELFX Exteriors Open Cities Patch (https://www.nexusmods.com/skyrimspecialedition/mods/16265)

AI Overhaul SSE (https://www.nexusmods.com/skyrimspecialedition/mods/21654)

Immersive Wenches (https://www.nexusmods.com/skyrimspecialedition/mods/595)

• Install main file + KS Hairdos patch.

Cathedral Weathers (https://www.nexusmods.com/skyrimspecialedition/mods/24791)

• Main file + unofficial update.
• Load update after main file.

Cathedral Weathers MCM (https://www.nexusmods.com/skyrimspecialedition/mods/24940)

Wet and Cold (https://www.nexusmods.com/skyrimspecialedition/mods/644)

• Main file + Cathedral Weathers patch.
• Leave the installer defaults as-is.

Gildergreen Regrown (https://www.nexusmods.com/skyrimspecialedition/mods/348)

Nordic Snow (https://www.nexusmods.com/skyrimspecialedition/mods/670)

•     Load Nordic Snow last.

Realistic Water Two (https://www.nexusmods.com/skyrimspecialedition/mods/2182)

• When installer runs, leave the default options except for the Extended Ambiance add-on.
• Load Realistic Water Two last.
  

Better Dynamic Snow (https://www.nexusmods.com/skyrimspecialedition/mods/9121)

• When installer runs, select "Brighter Snow Materials".
• Leave other options as-is.

Wonders of Weather (https://www.nexusmods.com/skyrimspecialedition/mods/13044) 

• Leave default options as-is.
  

Sort plugins and start a test game and make sure all is well so far.