Depends on what you want to do with that 64GB emunand, if you want to use that 64GB space, also depend if that synsand is clean or not if it is clean and if you plan to play online just use an emunand CFW, it is more important to have a NAND backup on hand.
I booted into OFW sysnand? and setup my Nintendo account and went online fine.
I want to use CFW mainly for home-brew, retro consoles/games, SCUMMVM etc.. unlikley I will be playing any N* pirated switch games.