You're already pulling in $70K in 6 months and you're clearly operating what looks to be a company. Seems to me you're putting yourself up to some serious liability if something were to go wrong. Also, getting all your IP and other legal issues sorted out will save you massive headaches later on. Sure if this fails and no one cares to fight over equity, IP, and no customers sue, you might be fine. But what if it's a rousing success? You could be setting yourself up for some undue stress and some tax ramifications that outweigh putting it off.