Great questions, we appreciate your interest in Sorrel!
The project milestones outlined in OP are what we intend to deliver for the hackathon. As we progress further, the timelines for what comes next will become available. Hint - scan the QR code in the sample card image above to see the wider scope of what’s being built. 
Alex will expand on ques 1, 2:
At Sorrel Banq, we are committed to exploring and optimizing ways for providing access to our services to live up to our motto - “essential banking for anyone, anywhere”. Our app is optimized for low-bandwidth connections and is available on all web enabled devices. In the future, we can explore community addons for supporting offline alternatives, for instance, SMS to on-chain transactions for those who are unable to access the internet or our app. Being on-chain means anyone can build their own custom user experiences on top of Sorrel contracts.
(Alex’s intro vid above provides wider context)
As we aiming to be opensource and modular, our current plans do not include direct partnership with financial institutions or regulators. We are approaching this as an observer, learner and educator.
Sarah Sanchez, Director of Education will expand on ques 2, 3:

We have a few strategies planned to ensure that our target audience, particularly those who may be unfamiliar with blockchain technology, are educated about Sorrel and its services. To do this, we will focus on developing educational content that is both informative and engaging, and that can be used to promote financial literacy and Sorrel. Additionally, we will look to partner with educational institutions, influencers, and organizations to help spread the word about Sorrel and create awareness around its services. Finally, I will work to develop a strategy to measure the impact of our educational initiatives, so that we can continually optimize and refine our approach.
Jessica’s intro from an above post should also shed some context on ques 3
Michelle Ge, Director of Governance and Strategy will expand on ques 4, 5, 6:
At Sorrel, we do not need to directly store/own any users’ personal information. In future edge case scenarios where we may want to validate/prove profile data for adv services, this would be encrypted files on BTFS and minted into an NFT that the user owns and they /can choose who to give read access to. There’s also applicable use case for eg. Dominica DIDs and other viable KYC NFTs.