Yes, each person is different. For example, by calculation i should take in about 3'700 kcal per day. I estimate i'm more around 2'500 for maintenance.
The calory intake varies with several factors. It can well be that 3'000 is too much for you.
But eating 2'000 for cutting shouldn't be a big problem?
15-20% fat calories, 20% protein calories, rest complex carbs, where's the big deal?
My question is: how long does it take to transform carbs into fat? Is this a matter of hours? Or immedeatley if you don't use them? Most people advice to take the biggest part of the carbs during the first half of the day. What if I take them 2 or 3 hours before weight training? If I add 30-45 minutes cardio after that, the carbs shouldn't have any chance to get stored as fat, right?
Yes, it's a matter of hours in small scale. You won't get fat in a few hours, though. Carbs that enter the bloodstream are either used as energy source in the body cells, or stored in the form of glycogen, but if the storages for glycogen are full, they will be stored as fat. That happens "immediately" when you eat lots of simple carbs that all enter the bloodstream at once. Eat complex carbs with high fibre, that way the carbs enter the blood slowly and you maintain a steady glucose level.
Eating carbs in the first half of the day is a good way. After the workout, even if it's in the evening, you should still eat som complex carbs, because if you don't all the protein you eat will then be used as an energy source, not as building material.
Even carbs you eat before the workout can be stored as fat, if you exceed your need. For example, when you eat the whole day lots of (simple) carbs and calorie and work out with only moderate intensity.
Hope this is useful,
love and peace,