Uploading digital DVD download for purchase

Site URL: https://www.tattnessco.com/

I am trying to upload a DVD movie as a digital download for purchase in my website's shop in order to reach more customers with my product. I read Squarespace's help articles regarding digital products and I understand files can be no larger than 300MB. The original files for the DVD (menu, chapters and bonus features in separate video and audio files) are well over the file size limit (4.05 GB), therefore I created a zip file to reduce the file size but the zip file is still too large (3.88GB). I could remove the bonus features to reduce the file size however I feel that may not work and I would prefer to have the original DVD in it's entirety for purchase. How should I go about this? Would uploading the DVD to a file sharing site requiring a code to download be ideal? What are some examples of some sites? Thank you.