Hey Steve--welcome to the forums!
I've done 1500 for the past nine months now and the loses have been fairly steady. My true calorie average during that time is 1580 as I do have the monthly "day off". We're at about the same weight right now, you and I so one would think our rate of loss might be similar (though I am 10 years younger). I'm averaging around 2.75 pounds a week pretty consistently, though I'll have a 5lb week, then perhaps a 1lb, then a 2lb, then maybe another 5lb one.
I really don't work out yet--just my 5 day a week 1.5 mile walk in 25 minutes or so and some WiiFit on the weekends and other house/yard activities.
So, other than making sure you are brutally honest in logging your food, upping your water intake and perhaps mixing up your workouts, I don't have a lot to offer. I guess you might look at your calorie mix--that can make a difference in some people. I try to keep, on average, a 40/30/30 carb/protein/fat mix which seems to work pretty well for me.
Do keep us posted as to your progress.
47 M 5'8"
May 4, 2010...... 440? lbs. (Start FitDay Size 60 Jeans)
June 19, 2010.... 393 lbs. (First Weigh-in)
June 19, 2011.... 229 lbs. (164 lbs. gone in one year :-)
Current Weight... 185 lbs. (Size 36 Jeans)
Next Goal 169 lbs. (07/04/12)
Ultimate Goal 165 lbs. (12/31/12)
The best exercises for weight loss are Fork Putdowns and Table Pushaways.