Post this in the diet forum and you will probably get some excellent advice. Each person is different, Mr. X knows some people that get over 10,000 cal / day when bulking. I cant come near that, but do get at least 400g protein and 3500-4000 cal min., though I try for more. Maintenance for me is around 2500-3000. My problem is that I dont bulk as clean as I should and end up eating a lot of crap, leaving myself more work to do when it comes time to cut up.