Need an awesome app developer

I’ve been working on a design for a more functional twitter over the last one year. I think I've nailed the design and feel like it has huge potential. I currently work as an SAP CRM functional consultant, so writing up the business requirements and project planning is a cake walk for me. What I lack is three things: 1. A good developer (I have started to talk to a Chinese developer who is asking for $5000 for IOS app) 2. A great UI/UX designer ( I have a friend ready to do the work for $1000 but I’m kind of a perfectionist and don’t really see him do a good job) 3. And most importantly, TRUST in working with a person I don’t know in China with the probability of my intellectual property being stolen. I am a very trusting person in life. Not in business. I could potentially safe guard the core functionality from the developer in China, and have another developer complete it. However, I do foresee some issues with integration of both modules. I’d rather have one developer to work on it from the start. Maybe even partner. Even if this idea of mine is stupid, I’d still want to give it a shot. I was looking for places that I could meet like-minded people around LA, but haven’t found any lately. What would you guys suggest?