I can't eat when I first get up or I'm violently sick, so I have a pint of water then a big mug of coffee with coconut milk. Then we went out for brunch yesterday and had this family platter thingy of breakfast meats, biscuits and gravy, eggs etc, water to drink and I had orange juice with that as well, then a cup of coffee. Nothing then til dinner and we had salad, cous cous, with steak and salmon fillets, some avocado and sweetcorn and a slice of cheesecake. Had beer with that.
I drink a pint of water before every meal, plus one when I get up and one about an hour before bed, and throughout the day probably 6 mugs of coffee with coco milk. We try to eat organic as much as possible and I don't fry anything at home or add sugar to anything (I'm diabetic), don't do biscuits / cakes / chocolate very often, but not fussed when we go out, I'll eat anything.
I'm a UK size 10/12 bottom and 12/14 top ( big boobs :( ) and my weight is generally stable and lower/ mid healthy BMI naturally. I do suffer from insomnia periodically but that seems to be stress linked and I don't exercise to a huge degree, maybe half an hour- 1 hour per day.
I too think your insomnia might be diet linked and if I were you I'd kill off the processed sugar, up your natural sugar with fruit and increase your protein, so things like wholemeal toast with poached egg, soups, grilled fish and chicken and salads.