I think it's over 20 hours.

If we get Dark Side (Darth Vader red brick) and Force Grapple Leap (Darth Maul red brick) before doing Jabba's Palace, we would only need to go to the room after getting Luke in the free play, since all the rest could be gotten first time around. You don't need Torpedoes in either episode 1 or 3, I think that it will be much faster, since both bricks are relatively quick and Jabba's Palace is so long.

So without recording the entire segmented run, I can't submit?

I'm referring to a 100% segmented.

I don't have a great computer. Do I have to lifestream/record the entire run for it to be valid or do I just have to get a small video at the end to show I got 100%?