Post same articles on my site and article sites?

[pood]

I just purchased a bunch of content, they are okay quality, most are rewritten.

Would it improve my rankings if I posted these on my site first, wait till they are indexed, then submit them to article websites?

Or should I avoid posting these articles on my site and submit these to article websites for links?

[Receptional Andy]

Republishing an identical article elsewhere is not a very effective strategy - if you want to republish content, you should aim for it to be substantially different everywhere it is published.

most are rewritten

Depending on what you mean by "rewritten" the articles could still be of little value - if they closely resemble content already published (try searching Google for a few sentences from the articles).

[pood]

I've checked parts of my articles in google, but none shows up.

I think I'm going to stick with half the articles for submissions and for posting on my site.