I believe you may as well do basic on page SEO when building your site. Maybe even build in a blog, which will serve two purposes - original content and update

I believe you may as well do basic on page SEO when building your site. Maybe even build in a blog, which will serve two purposes - original content and updates for your readers. You can do link building passively (review posts, guest blog posts etc...). I do agree with some others that it would be unwise not to do a little leg work from the beginning when building your site.