What is the functionality of your app? Get the MAIN functionality finished and release, don't worry about the "other functionality" right now. Release in small iterations, in amounts that a single person can handle. Follow this process and continually release features and improvements based on user suggestions.
It's ultimately up to how you feel with taking a risk, no one can tell you what to do. If you believe in the product, other people believe in it and you feel comfortable then go for it.