I by no means am an expert, but I take from the school of thought that there is no real reason to get your company registered until you start gaining revenue. In fact, I'd spend some time finding out what exactly your audience is looking for before even going any further. It's too easy to assume we know what people actually want instead of asking.

I'd check out Malcolm Bell's blog on how he used a survey and a landing page to get over 10,700 users for Mailcloud in 5 weeks before even creating the prototype (http://malcolmbell.net/2014/02/28/my-mailcloud-app-10000-users-in-first-2-weeks/). Bell will give you some great ideas on how to start your business on a dime.