@badger~ zen quals are not an ODC format and would be 1 or 2 games a night so it would start later. I msged Kmando and he said that they will be happy to work around the lan schedule.
I assume this means you can either play your matches later in the night after the grand final finishes, maybe at the net cafe or another cafe if there is one open that late? Or probably just play it the next day.
Definitely 3/4th is the best option here in terms of big competition scheduling.