I think your hours will be posted before your 180-day mark comes, but it might be very close. The Disney travel agents tend to get the times around the middle of the month, so you might keep your eyes open for someone posting the calendar for February around mid-July.
Assuming the link doesn't change, this is the one for February of 201
1. I noticed that they just load the new hours the same file (so, for example, the 2012 January file over-wrote the 2011 January file and used the same link). Assuming it holds true for February, you might periodically check that towards the middle of the month:
http://www.disneytravelagents.com/S.../pdf/ParkHours/WDW_Operating_Calendar_Feb.pdf