With such a topic so broad we truly try to cover the basics from all angles in this group. Nothing too big or too small. Nutrition is as significant if not more as exercise is to reaching your goals so learn all you can.
Personal Nutritional Profile - Calculated Daily Requirements
Protein -
280 g .. maximum 10% variance is acceptable
Carbohydrates -
700 g .. maximum 10% variance is acceptable
Fats -
53 g .. maximum 10% variance is acceptable
Total Calories -
4351 .. calculated maximum, do not exceed for current goal
So for that above do i absolutely HAVE to get that many calories a day??? I don't even come CLOSE to consuming that much food these days.
Looks like it'll let you cut it down to 3900 if I'm not mistaken. It's a matter of trial and error. You might need 3500, but you might need 4500. Experiment and find out what works for you. If necessary, get some meal replacement drinks and/or bars.
The fat intake looks extremely low to me. You can afford to sacrifice some of the protein and/or carbs in favor of some healthy fats.