2. Hold on... a four-way 25% equity split? You mean you've built a product from scratch, and now you want to give away 75% of the value to a bunch of random guys? I wouldn't do that.
3. And you don't even get to be the CEO/Chairman? The money guy is going to be a part-time CEO? That's a recipe for failure.
Run, don't walk. This is a terrible deal. You seem to have built something of value and you're about to throw it away. Bootstrap your business for a couple of months -- build a product, validate there's interest for it -- and then seek real funding.
Usually you can get all the intel/network about the "industry" that you need by spending less than 2% equity on advisors, or by spending a couple hours with a knowledgeable paid consultant.