Never Build a page from Impulse Likes! All likes are not equal, and bring down you future Impressions and CTR.
It's tempting to use some super attention getting post and picture to get likes, but he like won't be real people who care about your page.
And you need to follow trend and create engaging post and images targeted at you niche. Even spinning something popular, but make it relate to your niche. Harlem Shake, Gangnam Style, current news, etc.
I have 3 goals:
Also increase your posting frequency. I schedule at least 3 post a day.
Also take notice of Time your user normally visit your page, and post during the peak hours of your niche.
i built a collection of funny picture and quotes related to my niche,
I ask emotional questions, and start debated related to my niche, and I split test conversion post related to my niche.
Also consider sponsored post, or Target you existing Fan with Ad by impression to bring them back to your page.