Can you really sustain the project with only three people in your team? How about the marketing? Are you planning to also manage the bounty and other marketing related gigs? I think you should consider getting third parties or just expand your support.
The development of the platform will indeed require more people in the team, that's why we are going to work with contracted developers thus we can deliver on time. As for the marketing, we believe it's sustainable for us to manage the bounty campaign and to engage with the community.