I feel I should clarify that all of Re:voir's other Mekas releases are worthwhile (if not always as accessible) but this one in particular is very much of a piece with the other diary films. (Perhaps they didn't include it here because it's expressly focused on his friends and therefore less "personal'?)
Another item possibly worth getting at the same time as this is the Walden Book, which includes detailed notes about every shot of the film. I say "possibly" because it's an essential companion piece...but maybe it will be included among the promised "book of texts by Mekas about the films"? I don't know--it's like 150 pages, and this set doesn't look wide enough to accommodate that on top of everything else