[stc]

I have been dealing with this issue myself, albeit I am the 'business guy' so have been teaching myself development and am building out the prototype myself so that I can approach potential cofounders as more than just the 'business guy'. But for someone who already has the technical chops I would think you should start engaging potential partners sooner rather than later. There will undoubtedly be plenty of up and downs for your venture in the future and partners that are only interested after you have a product or traction may not be prepared for the full slog.