Improving Wordpress Blog Articles for SEO and Attractiveness

We have a big project for editing wordpress blog articles for SEO and attractiveness.

There are 150 blog articles that are not very SEO friendly and each require careful editing. Most articles are just text with very little SEO effort. You can see the blog articles here:

https://www.elkmountaintents.com/canvas-wall-tents-for-sale-by-elk-mountain-tents/blog/

ALL of the 150+ articles will need at a minimum the following work:

1) Additional images added so that there is at least 1 image for every 200 words, pulling from hundreds of our own images or from any free-to-use image website as long as the images are relevant. This means you will be adding 3 to 6 pictures per article depending on the length of the article.

2) Alt text for each image using keywords from a list we will provide.

3) At least two relevant outbound links pointing to a reliable industry source.

4) At least two relevent internal links per page (e.g. to a specific product page, other blog articles, FAQ page, etc.) with variety (i.e. not simply having a "check out the shop!" at the end of each article). Linking tools are welcome.

5) Adding appropriate subheadings to articles with H1, H2, H3, etc. tags to break up the text and including keywords in those subheadings as appropriate. Many articles only have a title followed by a block of text.

6) Using Yoast or similar plugins for suggestions of improvement and following through. We are willing to pay for premium versions of plugins if it is helpful.5) For example, selecting an appropriate metaphrase and focus word based on a list of keyword and then following the Yoast suggestions to improve the articles.

We are looking for someone with experience who can be creative and won't limit themselves to just the requirements listed above but who can also bring their own suggestions for improvement so that each article can become attractive and achieve maximum SEO friendliness.