Starting a SWRP server

So my friend started a SWRP server i joined his quest and i'm helping him,
Wanted to ask you guys if you know any addons that will really fir into SWRP or can add a lot to the role play.

General advices are wellcome as well if you don't know good addons.

Addons we already have:

1. Police Shield
   
2. Hats Hook
   
3. Awarn 2
   
4. ULX
   
5. Body Groups
   

thats kinda nothing lol, just join some other swrps out there and watch their addons