Translate website into english with seo tags

We need to translate into english for seo 60 wp blog articles of our website

We will supply the translation.We expect the following services:

Check the translation of keywords
Find the right keywords according to google queries
Set the tags (alt tags, H1, H2,H3 ...)
Make sure the translation is optimized for SEO
Set up the articles on WP using the best format for SEO.
Our website is [URL visible pour les membres Pro]