Architecture of a pods based solution

I’m starting the development of a solution based on pods (custom type, cf, relational fields…). The content entered into the cf (in principle the whole site) should only be accessible for logged in users. A user should only see those records entered by himself.
Now I’m confused wether I should focus on an interface in the WP backend or frontend. Should I redirect the user after the login to a front end page or present the data in the backend of WP?
I would like to build a nice user interface and this sounds like “use the front end” to me.

Sorry – no typical technical question for the forum here – but I need some feedback before I start developing…