Hello there! Here is an example of my musicI really like the idea of your game. In my channel i upload some LoFi songs that can give you an idea of the things i can do. I think LoFi is perfect for your project, because is focus on the nostalgia feeling and is chill music. If you want, i could make some ambience music with LoFi effects. Of course i can help you with the sound design, i'm not an expert but i have some knowledge and experience.
Text me here in itch.io or on discord (dom_myshkin)