Seems like a lot, but not unheard of. However, most of the individuals I see taking in those kinds of calories are world class athletes with crazy training schedules.
What is your build? If you are very skinny and have a rapid metabolism, 3000 probably won't do anything for you if you are trying to add muscle. Most skinny guys need to be up over 3500 calories to start to see change.
Oh yea, and ditch that weight gain crap and eat a whole, balanced, natural diet!