I've seen many projects trying to basically do the same thing. You add more problem here as you address a very specific user, which probably need or not need a new platform for their interactions. The problem here is the same as any other project, user acquisition, and token demand.
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The concept of the project is the most difficult task at this time.
I hope your project will be much better than existing social networking crypto other wise yours perhaps will be experienced similar thing with them.....unsuccessful.....Some advice outside your project concept:
1. If you plan an ICO/IEO, do not put too high target, if I'm not mistaken that raised fund of ONZ achieved USD 1 million (softcap reached around that figure)
2. Plan a good advertising such as good bounty.
3. As joniboni said, generating token demands and user acquisition should be highly concerned inside your concept.
4. Please to appreciate crypto stakeholders in general and also your project stakeholder later mainly investors by keeping their trust to monetize their investment fund, bounty hunters for their work to promote your project to public, and other related parties including this forum community, bounty management, public, etc. No more scam project and failed project in this good momentum of crypto world as rising to fly higher than before.