No real paparazzi, no "fans", a city that is collectively full of people trying to go after their own ambitions. All those are factors that will lead to the failure of your celebrity character.
No one that'll roleplay a paparazzi will be able to capture the scene in a proper way with the right sound effects and the hard work that goes behind the creation of the video, not to mention the lack of things your character will be doing. Unless there's a genuine faction that is truly gigantic, making this work will be very hard, especially not with a playerbase of 150 players, with a huge amount of cops that probably won't care, civilians that run their own companies and doing other jobs, and criminals that are just committing crimes. Very rarely do you see this kind of roleplay succeed, and a lot of those celebrities end up being ingrained in the public eye too much that slowly there would be no real meaning to their fame because of how easy they are to find and speak to.
If you wish to do it, go ahead, but you'll burn out quicker than you think. Development wise you won't go anywhere, because there isn't a faction to host you or work with you to shape up your character, unless you wish to start an already developed character, which will be impossible in this case because you can do anything except have predetermined fame for a character you have done nothing on.