FFImageLoading Plugin

Hi , I had use this plugin with my app downloading many photos from my web to the app phone, its works perfect.
My question is if I put all that photos in my resources folder its will work ok?? or maybe I will have a memory collapse ,, ?? the photos I have compressed to 45 kb each one, and I want to use my app out of internet.
But I've read that using the resource folder too much is not a good practice..