... Big? Calibre pagecount (APNX algorithm) reports about 13500 page for the omnibus, so this isn't going to be one I read one after the other.
Still, I do enjoy *big* stories. Bigger than could be shoehorned into a single volume. And everything I'm seeing online says the first 4(?) books are pretty much standalone with satisfying conclusions. Also listening to the audiobook a couple of chapters behind has added a huge amount of understanding to the story.