Well install Fusion Girl, then BodySlide to make a custom preset(you can always download a preset to use in BS), I personally use CBP for physics https://www.nexusmods.com/fallout4/mods/39088?tab=files. You need F4SE for CBP though, there are some good guides on youtube and whatnot. If you don't like Fusion Girls textures you can always download a different one. Just make sure whatever you install is compatible with Fusion Girl. Same goes for outfits, there are tons of Fusion Girl conversions for outfits. Hope that helps some, have fun.