Muscle burn only accounts for appx. 5% of calories during cardio. Not enough to worry about, that's only 1 gram of protein per mile run. Keep the cardio, it helps keep the fat off. Your pro./fat/carb. ratios look very good.
When I was training to ride a century on my handcycle, I was riding 120-180 miles/week, 2 hours daily lifting and I maintained my weight at 182-185 during that time.
"To give anything less than your best is to sacrifice the Gift."