Hello guys, long time lurker first time posting here. A couple of months ago a friend of mine (doctor in training) wanted to start a blog about health and just like any other person starting a blog, he wanted this wide and big behemoth site with broad categories, so we started it together. Now I work in an online casino (offline marketing, mainly meeting with affiliates and showing them a good time on company money) and I have around 20 hours a week to devote to this blog since I recently stopped drinking. We started it, got adsense approved within a week and he started writing the content. I recruited another friend that's a psychologist to also write content. I would do keyword research and write some content, but they are the two writers. We started making some money (~500eur monthly) but we seem to be stuck there. Since it's my first time running this kind of a site I am out of ideas what to do. It's just 4 categories with blog posts in them. I do not think that PBN is a good idea. There are some small clusters of posts since both of my friends pick a topic and write 3-4 articles on them so I interlink them and if I can persuade someone, I get backlinks from relevant websites. But most of the articles get stuck on positions 15-30 in SERPs. The only keywords that I can secure position #1 for are the reaaly long tail ones with ~50 monthly searches. Now I do some blog commenting (drop the link and make it look natural), I do forum commenting, a shitload of facebook sharing and google +1 (In my experience, 2k social signals will rank you for a week or two tops). I've talked to the guys in our SEO department at work but they are kinda retarded (they have a huge budget so they basically tell me to throw money at it). I don't want to turn this site into a clickbaity black hat website. It will double revenue, I've tried it with a couple of articles, setting a different image and description just for facebook and posting it in groups full of idiots but I do not want to get the website penalized after Penguin and Panda and all other google predators. So my questions is do you guys have ideas.Should I change the monetization method? The ads are optimized since we did a shitload of split testing and the website is pulling around 300 daily visitors out of which only ~20 are organic. Should I just keep making it bigger? Should I build a PBN and just link to the small clusters of articles and rank them? Should I secure expensive backlinks?