File size project manager

Hi guys,

Could someone can help me to create a script that allow to know exactly the file size of the file plus all of the textures, proxies, xref, etc. in real time?
I'm using the render farm and sometimes it takes a lot of time upload gb of crap comes from the props, forest pack, models with heavy textures, and could be nice to have like a list that it's automatically upgrade once you merge in the scene models and stuff.

Many thanks!!!