nvm, I did it after an extra bit of trial&error.
I attached the modded launcher if someone needs it. Some things:
_obviously, this apk won't install like regular apks! Move it to system/app
_backup original seclauncher3.apk just in case. Oh, backup with titanium data of tw home too
_modded apk is smaller than stock one. Don't worry IT'S FINE
_don't worry about bootloops, if something goes wrong your phone will reboot in touchwiz easy home (assuming you've not deleted it)
_fix permissions of seclauncher3.apk after everything is done (rw- r-- r--), even if I don't think it's that important
_scrolling from the very left to the very right homescreen with one swipe to the left looks weird, don't know why. Maybe this feature was just meant to be off. However, if you turn off infinite scrolling, problem will stay hidden (very simple to turn that feature off, do a little search)