online community applicstions and websites

Which method of Bubble.io outsourcing would have the highest risk-cost-benefit? We have designed an application in figma (both the frontend, useflows and logic flows) we now want to outsource the actual development in bubble.io.. Requirements: - we need to be able to understand the workflows developed upon completion of the project (entailing proper documentation). - we need to be able to maintain the platform upon completion. - we must have security knowing that our Intellectual Property is safe (IP)