I too love timbits and coffee! However, the timbits are loaded with sugar and are empty calories. I put a lot of sugar in my coffee, so I had to cut that out all together. I agree, you are probably around the 2000 calorie range. I am 5'10" as well and my caloric intake in order to loose weight should be around 1400-1600 a day. This depends on my activity level. Obviously, the more you work out, the more calories your body needs to recoup. I just had a baby in June and have about 20-25 lbs left to loose. I think the last 20 is the hardest to get off.
A friend of mine who just won a body building competition gave me a diet to follow. It basically contains high proteins like chicken, lean red meats, salmon, tuna, lots of veggies, and some fruits. Berries are the best to consume as they don't have as much sugar in them. Stay away from bananas - they are loaded with sugar & fat. Women are notorious for being bad carb burners. The body stores it as fat and when you eat sugar or bad carbs, it raises your insulin level and your blood sugar drops. This causes us to gorge ourselves when we get hungry again.
Make sure you eat 5-6 small meals a day or your body will shut down. Sugar and bad carbs are the worst... stay away from them. Try eating oatmeal for breakfast and put a little Splenda in it. It's a great carb. Baked sweet potatos with nothing on them fills you up and are good for you as well. If you want pasta, eat the whole wheat kind. If you crave something sweet, try a whey protein shake. You can buy whey protein powder anywhere. Mix it up in a blender with some low fat milk, ice and some frozen fruit. It's really good and satisfies my sweet tooth. Beer and wine are my downfalls too! I LOVE Guinness!!!!! I try to stay away from it, but I have at least one a week. If you crave something (mine is chocolate), eat a little bit of it to satisfy the urge. Otherwise, if you ignore it, you'll end up eating more than you want. I sometimes get a small can of chocolate icing and have a teaspoon of it during my week moments. Another great thing to eat is protein bars. They are sweet and depending on what ones you eat, are low in carbs and high in protein.
Anyway, this is probably more information than what you're looking for. But, thought I would share in the event you are looking for some diet suggestions.
Good Luck to you!