Customize an existing Unity game

I'm looking for a Unity developper to make a few minor changes to the following game : [login to view URL] I will provide the Unity project source, here are the tasks to be done : 1) Set the project to be built in webgl 2) Change screen size to 480x800 (width/height) 3) One the home screen remove all the icons except the cart (to choose the car) and replace the Cart with a button « Select vehicle » that will be centered 4) Add the vehicles from this package : [login to view URL] 5) Set the rickshaw as the default vehicle (will replace the blue car) 6) Push the horizon line a bit further (blue background and sun) so the player can see further ahead, there are buildings that are visible beyond the image 7) Replace the music with the track I will provide 8) Replace the actual game name with the name I will provide and replace the game icons. Deliverable : webgl build + modified Unity project.