Well basically it should work out-of-the box. If you change this gamelistFolder="/storage/.config/emulationstation/gamelists/" your gamelists will be stored at the config dir instead of the rom dirs but that's afaik just a matter of personal preference.
Yeah i know but i scraped before in ES.
If scraping in ES the gamelis.xml will be in that location.
Because all my gamelist already where there and scrape my n64 games later i decide to put my gameslist.xml in that location. Otherwise i had to redo my wii gamelist manually again cause screenscraper has not many videosnaps for wii.
If i make a backup in LE settings will all my emulator settings and all my roms/games be backup too?