Hi Tymen Boon,
Thanks for your reply !!
As you said that I should post the content on my site first then I can post it on High PA/DA & lower Spam score PR sites with my site's source link.
If we see in case of most popular PR site prnewswire.com it distribute same content on multiple sites more than 30 with its source link at bottom of each PR site . In 2014 Panda 4.0 hit prnewswire badly as given in this report http://searchengineland.com/google-panda-4-0-go-press-release-sites-192789.
In this case what will you say? Thanks !!