I've heard of one event that has games be under 50KB, does the same restriction apply here? For most stuff I do, outside of this event, my stuff rarely exceeds 8GB, and that's just do to quality of life and add ons.

I do text based graphics, so the file size never gets super big.

There's no file size limitation. Super huge downloads might prevent your game from being played by jurors, but that's on you. <100MB should be good.