Just continue to submit your news on your website and Do SEO and SMO side by side. by following the Guidelines of search engine. this work well o index website on Google search news. you may need to submit your website to Google by using the webmaster this is best way to get index website by the Google.
If you submit high pr social bookmarking,press release,article submission and social media definitely your website will come in google news and submit your site in webmaster tool because google will crawl your website.
Submit your site to Google news. They will review it and if you pass then you will be included. If I were you I would ensure i have lots of up to date content first.