Digital Home Command Center

This is a soup to nuts project. I'm so lost i'd rather pay someone to do the whole thing than try and figure out the parts i need on my own. I'm looking for a digital home command center with a 43" display (landscape format) with a frame and touchscreen. Based on my research i think the best platform for this is raspberry pi which is super overwhelming for me to try and figure out. I'm looking to have various areas of my life interact with it such as calendars, pictures, weather, to-do lists, and anything else we can think of. I'd also like to weave my home automation into this to include tracking my nest, my tesla app (car and solar panels) and the various 'smart' plugs and switches around the house. Having it be linked with alexa is preferred, though if it makes more sense to get a different home base such as google home i'm open to that as well. The look/feel that i'm going for is like a dak board or a mango display mirror (without the mirror part). If you think you can help but have additional ideas or a different solution, i'm open to all ideas.