I think Steve has a meeting with the management at AT soon and no doubt will announce what the format is.
Continuous Deca in 12 days would be silly. Bear in mind the cutoff in Mexico (which is an "easier" course) is 14 days. I think there would only be 2 or 3 people finish within that time. The winner (most probably TC?) would be circa 10 days.
Continuous Quin. 6 days. More realistic. I dont think the WR of 73 hours will be troubled though!
FWIW I think Steve will switch it back to 10 * 1 and 5 * 1 format. The continuous format will detract from the "last day" finishing spirit where everything comes to a head on the last day (deca/quiin/triple/double/single and half all finishing on the last day).
If thats the case I would do the triple as its the only one left for me to do!