Sounds good to me. Credibility will be hugely important. Perhaps having a photo of yourself with a couple of beautiful women might help.
With the follow-up emails, you may find it more effective if you just give good free, encouraging advice for several emails before you gently introduce your product recommendations. That way, your readers will learn to trust your opinions.
Also, instead of having 20 follow-up emails, you could have 100 or 200 or more in your autoresponder sequence. I learned that tip from Internet veteran Jonathan Mizel.