Too much exercise?

Okay guys, been awhile.......231.5 lbs and counting. I'm sitting at 2400 to 2600 calories a day, and I'm doing a little more of the HIIT training. I have 3 rounds at night.....I run my first one which takes about a half mile. I walk another half mile and on the way back I crank out another one which gets me home. Then I set the timer for another one strictly calisthenics (squats, dips, push ups, burpees) I change it up a few times a week just because of fatigue. I still have a 1 mile walk in the morning and a 2.5 mile hike at lunch and the 1 mile walk back to the car. It may be overkill, but thats the breaks the boss gives us at work so I'd rather be doing that than sitting around eating and BSing with everyone. Thanks again to everyone for the advice. Feel free to hit me up if you guys have any questions or extra advice. Later.