Your workout looks good, I would consider adding leg lifts, hops, rowing, bends and thrusts, side bends, toe touches, trunk twisters, push-ups, bend and reach exercises, body twists, squats, and mountain climbers. These are considered the "daily dozen" of the marines. Also, don't forget to stretch, and when running try to perform some windsprints as well.
As for your diet. Since you're going to be in heavy training mode make sure you are taking in at least 1 gram of protein per pound body weight. I typically eat 6 - 8 meals a day (dividing my daily caloric intake equally among them all).
To lose the weight around your midsection opt for a diet rich in only complex carbs (oatmeal, sweet potatoes, whole grain breads etc) but keep them to a minimum to burn up that fat around your belly. As usual limit refined sugars, excessive oils, fats and sweets. Drink lots and lots of water.
Keep at your strength training, don't over do it, realize that your body needs rest to grow and develop.