Movie Management Help!

Alright so I have my external hard drive with a lot of movies on it I’ve been getting lately, and how I organize them is a folder with the name of the movie, then the movie file inside.

Example:

Finding Nemo (Folder)
Finding nemo bluray x264 1080p.mp4

And then I got the addon for kodi, the movie database, which is really nice cause it gives my movies art, trailers, and descriptions which is really cool and I like a lot. But I had a couple of questions about it thatI couldn’t seem to figure out on my own.

Is there a way for it to download all the art and descriptions for all the movies I have? So if for example my internet went out I would still have the art and info about the movies.

And if the previous question is possible, is there a way to make it so it downloads the movie art and info into the folder of the movie, so if I were to plug the hard drive into my pc it would look like:

Finding Nemo (Folder)
Finding nemo bluray x264 1080p.mp4
Finding Nemo Description.xmf
Finding Nemo art.jpg

All in the folder.

And last question, if the above stuff is possible, can I do the same with trailers? It’s a 5tb hard drive so space isn’t a problem, and I think it would be really cool to just have the trailers downloaded and part of the folder also.

Thanks in advance for any help!