Hi,
Having looked at your requirements, i feel that i will be able to assist you in determining whether the template has any errors, works as excepted and if the interface is good. this is because, based on my experience in designing websites and optimizing templates for mobile and PC i feel that i can be able to assist you. I will also write a documentation highlighting sections that you can improve and also fix any issue that i notice during my testing.i will optimise it to be Mobile friendly and give tips on how to market your template. Incase of any question, feel free to contact me in my inbox. Hoping to work with you.
Thanks in advance.