My mods doesn't includes ped models (suits), only in few cases, so, after installing the script 
that brings the powers you probably want to install a ped model to use the powers, this guide 
shows how to install peds in a very easy way:

https://www.youtube.com/watch?v=96GzYA69GmQ

After adding peds to game, it probably will crash due to game limits, to fix this, apply all steps of this guide:
https://gtaxscripting.blogspot.com/2019/05/gta-5-added-peds-limit-fix.html