Hi:
Congrats on arriving at this important juncture in your business.
Regardless of how you decide to compensate the development team (or any other employees/contractors), your most valuable asset at this point is your vision -- rallying others around conquering a big, broad challenge is stickier than cranking out code for a platform/app.
Otherwise, please know that raising money will take longer than you anticipate, via either the crowdfunding route or the angel investor path. What is your plan for the period where you are developing the product but have received $0?
Lastly, I can't tell if you have an MVP, but if you don't yet, consider one of the many low-cost hacks that others have had success with -- presenting even a rudimentary version of your solution is easier than pitching a dream.
If you wish to discuss, send me a PM through Clarity for 15 free minutes.
Cheers,
Kerby