Fiction Help?

So I'm thinking of writing a story that's about ten chapters. Maybe more later on if I like the way it goes. It's based off a dream I had this morning. It involved Christian Bale and Timothy Olyphant. (Swoon) I like older men and my dream was VERY sexual. In my one story I've posted with Synyster Gates right now, I'm not to the smutty part quite yet so I feel I need to write some smut. It's been too long. The new story does have a plot so it's not all just sex. My issue is, should it be a Fan Fiction or Original?

I might use their first names but not their last and they won't be doing things similar to the actor's actual real lives. I just think of them in my head for the characters. I like the name Christian, though. I'd just make it Original but if I stick with Christian as Christian Bale's name, people will be like....."Why isn't this Fan Fiction?" Sigh. Maybe I just shouldn't care what people think so much. I dunno but would any of you read the story? I'm gonna work on it for myself regardless but I'm just curious. Someone help about what type of Fiction it should be, please?