Posts vs Widgets

Two different developers are helping me build a fairly simple three or four age page WP site for my business (mortgage company). Though the site is not really a blog, I want to log in frequently and change mortgage rates and add/edit some content, but without messing up the overall look and structure of the site. To accomplish this, one developer has divided the pages using multiple html widgets, where each widget allows me to edit the content in a certain section of each page. The other developer suggests using multiple posts per page to allow me to do the same thing.

I am very “SEO” conscious. For SEO purposes (or for any other reasons), is one method better than the other? Is using multiple posts or multiple widgets per page in this fashion recommended or problematic? Thanks.