LinkedIn Post Content (Topic Marketing/Digital Marketing/Growth)

I lead a 30-person marketing company and I'm looking to establish further credibility as a thought leader and expand my reach in the market via sharing LinkedIn newsfeed posts. I would like to have a 'ghost writer' generate content for me on a regular basis that I can then tweak and post to LinkedIn and on the blog on our company website ( ---------- .) I would like to test a few people out and see if we can find a longer term fit. Topics for the 500 word posts can include:

-Marketing strategy
-Digital marketing
-Growth hacks
-New marketing tools
-Great examples of marketing innovation by other companies
-Other related content

(Our firm serves only clients that are committed to 10X growth over the next five years - fast growth companies.)

Initially, I can pay $8USD for two 500-word posts ($4 each.) Thanks for your consideration!
Jon