Please, let us know how it will go. My Elite visa expires next year.
That is a very rare thing and most people haven't heard about it, that's why you're getting a different answers. But if Elite stuff told you they can do that 3 months extension, I'm pretty sure they can.
Regardless your Rayong/CW question - I'm pretty sure you will need to go CW.
What package do you have at the moment? Some old packages are indeed sort of "renewable". For example, you can update your old 5-year package to 20 years.
sorry, why do you think that? The picture says it's available for students studying bachelor degree or higher(see yellow background). The graduation thing relates to "+1 year extension for finding a work"(blue background). At least this is the way I understand that infographic.