Which Type of Site for my domain?

Hi Support,

I was wondering if you could help me. I own a domain http://www.trainbnb.com ( not linked to airbnb whatsoever :wink: )

and I am not sure what sort of content it should have.I really want to use the plugins and themes from my WPMUDEV premium membership.

Can you please help me in trying to get a steer towards a particular type of site.

My main goals would be:

1. An authority site
2. High quality traffic
3. Make money eventually

I hope you give me some pionters or ideas.