[Basic Addons] 3 Basic addons for RP

This really is all up to what game mode you want to play on and what your goals for that server is. Also, preference.
For StarwarsRP, the Atmos might not be used because usually you are in a ship, so you cant see the day / night or weather anyway.
My top 3 are the;
Sit Anywhere Script
1 of the hundreds of ID addons
Any playermodels.