My first length goal is MBL, which should be March 2010, and then WL in early fall 2010. But, I actually voted "3-4 yrs" because my main overall hair goal is to have BSL to MBL natural hair and longer. I'm transitioning without the BC, so it'll be a while before I have that much natural hair. I will still have texturized hair on the ends, so if I reach BSL-MBL natural hair in 3-4, then I will actually be HL in the same time (all hair length together, though some natural and some processed), if that makes sense.
Sounds complicated, but I just plan to take it easy and let it grow. I was able to go natural easily in 13 mos (with a BC) just with the most lazy/ultra low-maintenance routine ever. I know I can do it again with little to no effort without a BC this time.