Am I starving or hurting myself?

KiltFuPanda

Might not be the place to ask, but I figured I'd try.

My background:

I'm 360 lbs, 24% bodyfat.

I lift for about an hour and a half for two days out of the week, and do some throwing training one day a week, with plans to increase frequency. My goal is to try to lose fat while keeping muscle (to a point), but I've gotten two different types responses as to how I should be eating.

Response 1:

Based on MFP's calculator, I should be eating 2400 calories a day (sedentary lifestyle, wanting to lose 2 lbs a week), and I don't eat back exercise calories. If I go over the recommended daily amount, I try to make it all protein.

Keeping under 2400 has been relatively easy - the first month I was dropping 5 pounds a week (water loss, maybe?), and I definitely feel better. But now I've plateaued out for an entire month, but I haven't had a caliper test done to check to see if I've lost fat lately.

Response 2:

Most powerlifting and bodybuilding sites recommend I follow this for cutting fat while keeping muscle:

1 gram of protein per pound of body weight
2 grams of carbs per pound of body weight
30% daily calories from fat.

Based on body weight, that means I should be eating 6480 calories DAILY. My current TDEE calculation (based on http://www.shapefit.com/basal-metabolic-rate.html) is 4700-5300 calories a day, depending on which calculator is used.

Am I eating too low and hurting myself? I'm consistently hungry these days, but I'm not sure if this plateau is my metabolism slowing down too much. I'm tempted to buy a heart rate monitor to see if I can properly gauge my calorie expenditure.