Hello !!
Im Tarek Feteha, im a 3d artist, I have 5 years of experience , I have worked before on many large projects like your project ,first of all why don't we use flat colors? ,this will make the logo more attractive ,our logo must be creative ,I will give you some samples ,at the end I will give you the original file source +high quality jpg or png images, I am ready to start working from today and finish your project in nearest time ,I am a serious person , capable ,very commited to my work , I am sure that you won't regret contacting me .