Props for losing all that weight. But you probably still aren't in the best of cardiovascular or muscular shape. I would suggest building on your accomplishments by pushing yourself further! Instead of just watching what you eat and exercising moderately, get out there and start a weight training/cardio program. You will get much healthier and feel even better than you do.
Now is the time to go that extra mile and set yourself in good habits for the rest of your life. Once again, congrats man. I know what it's like to be pasty white and fat. But now I'm in pretty good shape and in early training to get into MMA fighting condition.
I never lost as much as you did, never had to, so know that what you have done is truly remarkable. Inspirational for the rest of TW, seeing as how about 75% of the denziens here are far from being healthy.
Good work!