One gram per pound does not seem to add up and seems way overkill. Excessive protein can cause toxic buildup and have adverse effects.
http://www.medscape.com/viewarticle/414351
Although the measurement is in kilograms. There are 0.45 kilograms per pound. I weigh 165 so in kilograms i am 72 Kg.
For body building the guide says 1.4 to 1.8 per kilo. Now although we are body building. We are not doing a high intense body building routine. More of an intense rounded out workout. We are not bench pressing, weighted squats, dead lifts, ect... So that would be a little high.
Every nutritionist and sports doctors I talk to say about 0.5 grams of protein per pound per day for this kind of workout. Online sources are great but everyone varies and never seem that reliable.
But however way you want to approach is up to you.