Good luck man...I'm doing something similar myself right now. So far down 10lbs....hang in there...the first week is the toughest.
A word of advice...get your carbs from veggies rather than grains, bread, pasta, or potatoes, and it goes a LOT faster. And when you reintroduce the grain and starch based carbs, watch the portions, and you'll be fine.
Getting older with a slowed metabolism sucks.