I installed it with the the twrp 18.104.22.168 recovery if someone is searching how, the OS works well, no problem, just for the wallpapers which bugs a bit with the livewallpapers but that's not a big problem after all, good work!
Btw for the gapps for those who want tiny gapps with only Playstore and google framework I've found here something from a Samsung thread if I remember it right:
For the gapps:
flash the zip
problem: Root not working, already flashed SuperSU and I can't access the Su Binary
Edit 2: it works now, cause i found this, thanks