Next year I will be beginning my first year of college and will be doing ROTC, so I've spent a good amount of time this year getting ready for PT (physical training). At first I was only doing pushups, situps, and some running but I've begun lifting using the starting strength program. I am 17 years old and quite skinny, 131 pounds at 5' 11 and 7% body fat. My abs and pecs are well defined but not very big. I have made significant progress from the beginning of the schoolyear (august) when I was only 122 lbs, a little shorter and with more body fat. My typical routine follows this:
Day one- Weight lifting (Bench press, Squats, pullups/chinups, chest flys, dumbell curls, pushups, some abdominal work)
Day two- Running (Usuualy about 3 to 4 miles, though sometimes I will go on 8 or 9 mile runs)
Day three- Loaded carries (farmer's walks and waiter's walks, or I'll throw the bag on my shoulder and carry it.)
Day four- Rest
On a good day I get about 3200 calories, though it's usually less. I figure that I do so much running that whatever body fat I gain is quickly burned off so any weight that I gain is just muscle and bone. I am mainly just trying to get ready for physical training next year but also want to gain some size. I'll usually get about 130-140 grams of protein, 140-150 grams of fat, and 350-350 grams of carbs. I think the ratio is probably okay but the volume should be increased.
What advice can you give on my current situation?