Need suggestion on Swift VXi 2015 upgrade

Recently got it from my brother, Swift VXi is in great condition. Although I want to upgrade by replacing the radio unit with a LED display. It’s a 2015 model and I intend to use it for another 10 years. I am new to driving and a display unit with rear camera is very important for me. Please help me with your suggestions and opinions anything beyond this is appreciated too. Thanks