I've never used pots that size, I used 18 liters at most, most often 12. Royal Dane \ Leb \ Thypoon \ Danish Passion \ Early Dane \ Nepal \ Royal Nepal all finished early\mid August for me that way. I know I compromise yield with that small pots, but the three weeks shaved off the finishing time is well worth it, and can be compensated with numbers. In my climate, taking plants until September severely raises the chance for mold, plus you get the hunters and foragers hitting the woods an masse.
How did the seed harvest come along? I remember you finding an absolute stud of a leb27v2 male which was super early, did you only do l27 x monk or did you also use a monk male somewhere?