Matt is right. I find that 2lbs a month may be pushing it, onc you're past the initial phases. You might be able to get more when starting out, but it takes a while. Now, the other problem is you want more muscle, but are a bit afraid of getting fat, and yes, excss calories will turn to fat. I also think you're getting a little overscientific. Keep it simple. Keep a log on what you are eating over a week. OK, now you have a starting point Now, you want to gain, so add , and this is random, 500 cal/day (could be more, could be less, you're using this as a comparison thing), and track it over a week or two, see what happens to your weight, and keep an eye on your waistline. If you are gaining weight and keeping your waistline in check, good. If ot gaining weight, add some more cal/day and track it again. If you're gaining but your waistline is going up, cut back on your calories. I's all trial and error I would think that based on your calculations, you are probably ballpark, but probably on the high side, but why not start there?