Building muscle with bodyweight exercises?

The thing about bodyweight exercises for building muscle is that you have a set amount of weight to work with. Those are all great exercises but trying to stay inside a rep range only works if you can add more weight over time. Your goal should be to be able to do more reps than last time every time. that's howyou know you're growing. I know a lot of people who've had great success doing pyramid style sets. ie 20 set 1 19 set 2 18 set 3 and on down to 1. and either starting higher next time or finishing faster. It's very hard to build new muscle after an extended period of time because your body quickly adapts to the weight. But as long as you're doing Everything right (Eating, resting, cycling intensity, etc.) You can do amazing things. You must have some knowledge about dieting if you know what your maintenance is but I can't imagine you really think only eating 600 above it will make you grow. To do a serious 3 month bulk you should be eating close to 60% more than maintenance level. For instance if you typically eat 3000/day you should aim for 5000/day or 21000/week to 35000/week I usually use this formula (bodyweight desired + 15%)x 25 calories ie I want to weigh 200lbs so (200+30)x 25 = 5750 kcal/day and at LEAST 1 gram of protein/ pound of body weight shouldn't be a problem when eating that many calories I recommend checking out stronglifts.com very simple easy to use site good luck.