Here's a link
to a dieting page with TONS of information, including a calculator your looking for. It also has a whats called a zig-zag week where it shows you how many calories to intake on which days of the week for maximum metabolism. Its like what ernurse was saying... you stagger your calorie intake through out the week to fake out your body. I personally found the calculator to be a little on the "high" side for me but I think that's cause they average it at a pound a week. Just subtract another 500 calories daily for the safe 2 pounds a week loss.
And, yeah, you need to eat something earlier on in the day. It boosts your metabolism and by keeping your blood sugar and metabolism better stablized your body will burn your fat more effeciently. I am NOT a breakfast person...I could go till 4 or 5pm without eatting much either but its a binge trap and really hard on your body so now I eat 1c cereal with 1/2c milk. Not much but enough to kick up my blood sugar and get my metabolism going.
The liqour is really harsh on a diet. Its super calorie dense without the nuetrients but if you allow the calories for it in your meal plan, 1 occassionaly isn't going to hurt. My suggestion there: make it a diet coke and rum (if you don't like the taste of diet coke & rum, try it with vanillia rum...world of difference!!)
Sorry to hear your schedule is so hectic right now. WTG keeping up with the calorie tracking though!! And remember you can always go for a small walk down the road for a lil' extra activity (and Mommy away time)!