yeah thats what I have as well. Its enough but in 2 years you'll probably want a little more. At least 32 gb ram for a little more serious work.
So proud of you Alina!!!!!!
Zacharias Reinhardt has published a two-part tutorial on setting up a large scale forest in Blender, that is memory friendly and can be rendered using GPU in most cases. The first part will guide you through generating and rendering a 3D tree and using the rendered image as texture for an alpha mapped tree. Then, you will also add several effects to this alpha tree, so that it is interacting with the light. The second part is about faking a better ground shadow for the tree and setting up a particle system to create the forest.
How it works
Make sure to check out artist’s website with other tutorials and different projects.