Well pretty much every DVD maxes at 480p for storage constraint purposes, so that might be your first issue. Ripping and encoding at a higher resolution than the source nets you nothing but wasted space.
That being said, HEVC is going to be the smallest file size for your rips, with reasonable encoding times and compatibility mostly not an issue.
AV1 is new-ish, so depending on your hardware, could take anywhere from 5x-10x longer, and only net you an average of 15% difference in size reduction, and then you have compatibility to worry about.