products with too many variations?

Hi all,
I’m having an online course coming up. I have a product that has too many variations (7 drop-downs each with 2-4 selectable options). I’m using woocommerce at the moment (since it’s not woocommerce related I posted it here). All of those add up to 576 variation and funny enough each of them has to have downloadable files. (in term of variable pricing I just need 8 variations, but they all need to have different file downloads). I tried to come up with a membership site but that doesn’t do what I want. I’d appreciate if anyone can give me any hint. I’ve been searching for a solution for more than a month:(
I guess a plugin that I can assign files to each option and it automatically sets them up on check out.
Thank you all