Proofreading my book. I'm the author.

Hi. I need an expert freelancer in proofreading. The freelancer must be native from U.S. Level 3 English required (here on freelancer.com). I am the author of the book. I have the copyrights (ISBN etc.) The text is already typed and arranged; I don't need arrangement. I will arrange it afterwards. I am looking for the documents to be checked for spelling, grammar, punctuation, consistency/appropriateness of verb tenses etc. Need perfect work with excellent English. If you read and complete the book, you can discover the secret of immortality. It is a Romanian book, which I decided to translate it into English and to give this gift to others, too. There are around 30.000 words to proofread. I mention that I’ve spent hundreds of hours to correct the English translation, because I wanted that the book (text) to keep its meaning, its style. Thus, I want you to know that you MUST correct the text ONLY if/where it’s WRONG, it doesn’t have a sense (using RED text). Also, you can modify the text (using BLUE text) where you want the text to flow, to be more readable, to contribute yourself, etc. Do not use robots. I will also give you a set of instructions (if you want us to collaborate and if I hire you).