One of the biggest downfalls that people have is the transition from weight loss to maintenance. Very rarely do people have a plan for that. That's why it's so commonplace for people to yo-yo...they know how to lose, they know how to gain, but what's lacking is the maintain.
There's some excellent resources on Sparkpeople: www.sparkpeople.com/resource/wellness_arti
So I would STRONGLY suggest you formulate a strategy for maintenance.
Here is my plan: When I hit my goal, I will gradually increase my calories by 200/day for two weeks. I will weigh myself 2-3 times a week. If I'm still gradually losing, I will increase my calories by another 100 or 200 and do the same. Although the idea of being super strict doesn't appeal to me, I feel like it's essential to know how many calories I need to maintain. Then I will set a range of +-2.5 pounds. Whenever I get to the high end of my range, I will switch back into weight-loss mode.