Well, on a clean bulk, with just the bare minimum of extra calories, you can add muscle without adding hardly any fat...however you'll put on muscle more slowly. Had you gone a little higher on calories, you might have added 25lbs of total weight, 5lbs being fat...so 20lbs of muscle.
Now, I'm not saying that's better. If you are happy with the progress you made, awesome! That's what matters. You're obviously doing things the right way.
If you feel like you could've done more, add another 100-300 calories a day, bulk like that for 8 weeks, and evaluate.
If you wanted to cut a little, I'd just remove some carbs from your current diet, about 400-600 calories worth. I think you're close to the borderline for your metabolism, so don't cut too many calories at first. Again, do it for 2 weeks and evaluate. You shouldn't try to lose more than 2lbs a week (of fat) and if you're already fairly lean, I'd aim for 1lb a week.
