If you're going to increase your protein consumption above 0.8 grams/pound of body weight, then you need to be aware of the effect digesting that much protein will have on the rest of your body. Most recommendations for gaining muscle mass are to increase intake to 1.5 to 2.0 grams per pound of body weight. Ensure you're meeting your required intake for vitamins, take a multivitamin targeted at "active" individuals, and make absolutely sure you have an adequate water intake.