Congrats brotha! That's awesome. My wife and I are fitness nuts I'm a former professional athlete and my wife is a personal trainer. We are in the process of starting a sports performance center. I was going to try and give you advice but you are nailing it! Eating frequent meals like you do will keep your metabolism high at all hours of the day. Don't buy into some fad diet, they work for some but are hard to maintain. Sounds like you already know that. Create a new lifestyle like you have and it will turn into the rest of your life.
The only advice I will add is to incorporate some strength training to you exercise routine. Some people are under the assumption strength training is to build strength only. In reality after a strength workout your muscles continue to recruit repair and recovery aka burning calories. It's doesn't have to be crazy at first, but might be a nice change off your joints from cardio.
Final thing, and some might disagree. But your body is stronger than your mind. Your brain will tell you it hurts and you should stop. Learn to turn off your mind and press through. Eventually you will retrain your brain to know just what you are capable of!
keep it going man!!!!!!
Sean