What Should My Next Step Be? Potential website needing visitors

Hello All,

I have created a very well designed 'Viral News' website, this website has potential as it has reached 30k facebook visits within 1 week (All of these visits were real) Website made $300 in the first month of being launch (adsense) and gets about 500 unique visitors daily.

My question mainly is, what really is my next step, what should I be focusing on?

Things I have done:
-Created Facebook & Twitter Pages (300 Facebook Page Likes, 150 Twitter Followers)
-Attempted to advertise content & page on facebook, this did not work well for me.
-Adding at least 1 post a day (100% unique, written by myself, 300-600 words)

What Should I do?
-Advertise my website with adwords or a similiar network (taboola, outbrain, etc)?
-Buy backlinks?
-Buy seo packages?

I am really confused on which would benefit the best for me, any output would be appreciated, thanks to anyone who actually reads this and replies

Anyone got any useful suggestions?

Well first of all try to up your social media, idk for what kind of news your website is but i suggest you make a pinterest as well, if it is something about every day life things Pinterest will work really good for you, also try to increase your facebook page likes and twitter followers (i suggest you buy some to get like 1000+ so when real people see your social media they will think you got some visitors already) Also try to get some guest post on similar pages like yours and sure you can buy some backlinks, but be careful)
so that is that, if something else comes up my mind ill post

Start posting 10 stories a day and GROW THOSE SOCIAL PROFILES. That is literally all you need to do.