As you grow, you need to eat more food to get bigger. So the food always needs to be going up through the years, as progress slows down. The key is maintaining your conditioning as best as you can. 15% is a little high for starting a bulk. I'd try to diet down further, but keeping protein up. Sorry I can't get more specific. Its hard to give you specific advice when I can't see what you currently look like and I haven't been watching your progress. Overall, it looks like your diet is pretty clean, so it looks like the adjustments you want to make are going to be more with portions and not with food choices.
For you or anyone else that wants to work with me on an individual 12 wk program, adjusting the diet, training and gear along the way. Message me at Next Level Nutrition, here at Naps Gear!