Okay, well, using the above links with your info:

Your bmr (I used an age of 35, not knowing yours, but that's a good average age to use) = 1472.5

Your daily maintenance needs with moderate cycling (3-4 times a week)

= 2,282.37 calories per day.

To reduce weight for losing about a pound a week or a little more:

reduce by: 342 calories a day.

= 1,940.37 calories per day, or stagger it. You could do, for example:

Sunday: 2100 cals (have your ice cream that day)
Monday: 1300 cals, short ride
Tuesday: 1500 cals, longer ride
Wednesday: 1300 cals, rest
Thursday: 2000 cals, long ride and a beer
Friday: 1500 cals, rest
Saturday: 2300 cals, long ride, and a few beers or other "out" drinks or desserts. Treat day.

That averages to about 1700 cals a day, and you won't be depriving yourself.

You'll see. It really works.

It does make sense to make those 12000 cals a week "healthy". You'll feel it when you ride.

Try upping your calories for a week.