Still, I won't discourage new writers from signing that contract unless you feel the payment is bad since 200$ in US and in other countries is different. If you want some degree of publicity quick, I'm highly recommending you to sign that contract.
But... There are some things that need to be considered if you want your story to be famous enough.
-Daily Updates: In this platform, usually a famous book has daily updates. Why? Because of the algorithm.
-A lot of chapters: Well, if my observation is correct, by the time you reach 400 chapters or so, you will have above than average collection as long as you maintain that daily updates.
-Good cover: That's the first thing that your reader see, what do you expect?
That's all from me. Feel free to correct me. Enjoy your writing :)