the only thing that conflicts its the interiors .esp
try installing them in this order, with
NMM:
Project Reality - Climates Of Tamriel V3.1 -
This setup
Realistic Sun for Climates of Tamriel and Vanilla by prod80 (optional, but recommended)
Climates Of Tamriel - Weather Patch - Fog Rain Overcast by prod80 (optional, but recommended)
Climates of Tamriel - Weather Patch - Snow by Saerileth
Realistic Lighting Overhaul 4.0.7C by The Realistic Lighting Team - select custom on first window then
This Setup DONT download Realistic Lighting Weathers RC3 version
Then run BOSS, if you have it, to update the masterlist