BTW, it Atkins, not Adkins (that common mispelling of his name puzzles me).
First of all, if you are 150 pounds, you are perfect for your height and need not worry that your diet is 60% carb, especially since you are physically active.
Speaking as an overweight person who went to a low-carb diet, I can tell you that I have had no difficult with a vigorous exercise regime while on it. In fact, I think the low-carb diet has actually given me the energy to sustain it. On traditional low-fat diets, I just never had the energy.
Now maybe when I get to my target weight and remain physically active (I currently walk at least 7-10 miles a day), I can handle as many carbs as you.
Probly getting confused with this skinny fella of Chicken Walk fame:
I quit smoking a few years ago and my weight started to climb a bit. I've lost 25 lbs since spring. I started walking for a couple hours per day thinking it would help my golf game. It didn't, but I feel a heck of a lot better. I now do a couple hundred push ups and sit ups a day. I've changed my diet somewhat, but not drastically. I've also cut back on the portion sizes. No more super sizing for me..
I've got another 7 pounds to go before I hit my goal.