Optimal position for call to action

I'm in the process of building an amazon affiliate site. I've got the home page as a 1300 word pillar article, and want to include a call to action above the fold, as well as multiple further down the page.

I'm wondering would it be bad practice SEO wise to have a comparison table with images links etc above any text or intro on the page, like just below the heading.
I think it would be good for conversions, ie placing the cookie asap, but I'm concerned whether it s the right move or not, also would amazon have any qualms with this in the review process?

Thanks bros

Don't see why amazon would have a problem with that, as long as you are legitimately promoting and reviewing the products mentioned.