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

The mod goes with suit .ini files for the following ped models:
https://www.patreon.com/posts/tactical-batsuit-49579493 - My favorite, Tactical Batsuit - Zack Snyder's Justice League
https://www.patreon.com/posts/batman-year-wip-56167044 - Robert Pattinson
https://www.patreon.com/posts/batman-1989-suit-50968151 - Classic Batman suit

But you can download and install any ped model you want, you can use my add peds tool to make things easier:
https://www.patreon.com/posts/35298524

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