My bid is based on the pricing you listed. I'm an experienced content writer with SEO experience and a native English writer/speaker. (Meaning, you tell me what percentage you want and I won't ask you, "Huh what?!")
For 20-25 pages at 400 words a pop, it definitely will not take me 7 days to complete. I was simply being conservative. Let me know, and I look forward to hearing from you.