First welcome aboard.
Building and weathering is a personal choice on the amount and what you want for your project. That said, to me it’s a bit much. With weathering, less is more. About the time you think, just a little bit more is when you should stop. That little bit more is usually too much. That line will change as you naturally improve your process on your projects.
As Erik said finish this model, identify one thing specific you want to improve on for the next model and work on that. On the next project pick something else to improve on. The more you build the easier it will be.
Here are some folks process.