I also do agree that a long upsell could actually have reverse impact on the sales volume, I would try to have more than one relevant and complimentary product and without having a long sales copy.
One way to close the sale without having to recap and resell again towards the end, is to have an extremely strong money back gaurantee(perhaps a 365 days or even a lifetime). You customer will buy with ease knowing that you stand fully behind anything you sell, and in retrospect you don’t have to write a 32 page copy sales letter.

Erfan Hettini, President, Enlightened Life Productions
Author, Consultant, Movie Producer
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