I'm glad to hear you're using Fitday, that's a great start. There a numerous calcs out there to find your BMR. Google search it and find out the number of cals you need in a day to maintain your body weight. DON'T FORGET TO INCLUDE DAILY ACTIVITY (ie lifting, running, average activity level) in the total amount of cals you need to maintain.
Depending on how fast you add the 10-15 lbs will determine how lean the weight is. IMO the slower you add it the better.
After you find your BMR add 250-500 cals to that number. Take the total and divide by five or six-depending on the number of meals you want to eat per day. Typically shoot for 1-1.5g of protein per lbs of LBM. I might be wrong but for some reason I'm thinking carbs should be 2:1 ratio (carb : protein). So roughly 160-240 g of protein and 325-480 g of carbs, and the rest coming from fat.
In the two hours you spend in the gym what are you doing? I ask b/c that is a long time IMO.