How To Offer A Free E-Book

Hi guys I'd appreciate a little advice about how to give away an ebook

I host a small creative writer's blog - this particular blog is more a hobby than anything else, it pays for itself plus a little extra. The readership is not especially large and I don't want to go to the bother of opt ins and opt outs. Anyway I recently came across an e-book on Project Gutenberg that I want to offer to my readers

My thinking is this: serialize the book for say ten or twelve days and then offer a link so the reader can download the complete manuscript. The ten or twelve posts would include ads, some Adsense and some affiliate. It would also, hopefully, get them into the habit of visiting my blog more often.

Now here is my difficulty. The book itself is pretty big; the major part - part one is about 160 pages, with chapters running from 10 to 16 pages, and therein lies part of the problem. With a minimum 4000 words plus per chapter that's a mighty big post and expecting anyone to read that amount of words is unrealistic, so that's not on.

So what to do?

I have two initial thoughts. Serialize one, maybe two, of the chapters over a ten/twelve day period, and then offer the link to the whole book. Or, serialize a few paragraphs of each chapter and then offer the link. The second seems more logical but then I'm into editing so that my readers will find it interesting enough to last the course. What would you do? How would you go about offering a free e-book of this type? How many words maximum per post?

Any thoughts welcomed.

Kevin