3D Rendering for building renovation

I need a 3D rendering that shows the way the inside of a church will look after it is renovated. There are a total of 4 areas of the interior of a mid-sized church. I would also like to show 3D walkthrough video of the new concept.

Please provide time to execute and cost.

Here is a folder with videos of the areas that need to be rendered.
https://www.dropbox.com/scl/fo/6wxavey0xx1bfyb4b0xu7/h?dl=0&rlkey=xbpx03qgr2viq6mu38rnktiui