I've been in a very similar position to what you're in now, at university in England and a side project went viral and was making a decent amount of money. In t

I've been in a very similar position to what you're in now, at university in England and a side project went viral and was making a decent amount of money. In the end I sold it onto someone that gave me a decent offer. Has to be one of my biggest regrets, I could have paid someone else to support it while I was busy with my education. Perhaps the biggest kick was that the person who bought it didn't really look after the site and it went into decline anyway losing most of it's users. Selling might be your best option, however be 100% sure before doing anything :)