Hello, I'm a certified Game developer, And game designer, Also I have A Nano degree in Advanced android developing.
I have a lot of experience using Autodesk Maya, And blender, And photoshop,
However I have someone Who Is working with me in Blender than can produce A high quality Arena like you mentioned to fast up the process,
I can also work with him So I can make sure everything is correct,
kindly send a message to discuss further,