If it where me I would go the other way and have the expensive dev lay out a modular architecture and then outsource the modules. Getting the architecture and i

If it where me I would go the other way and have the expensive dev lay out a modular architecture and then outsource the modules. Getting the architecture and isolation right is 90% of getting an app right because if code is properly isolated and a module is bad, it can be rebuilt without having to touch the larger system.