Hello, I am Maximiliano.
I been worked with unity for 4 years and before I like to learn about game development, so I'm so passionated when I am coding.
So I know how make that script of rotation, It could take me a few hours and I could explain to you what i did. If you let me I can show you how do to make what you trying, I did something similar to another project.
I'm really serius at time of code script with C#, make the terrains, and apply the corresponding colliders and meshs. All my jobs was made with hard work.
If you wanna test my skills, you can ask me when you want, I like to show my knowledge
I'm pretty sure that I can make a jobs that satisfy you.
Please, If you wanna ask me something else let me know throug the chat.
Yours faithfully