For a dry food, it is pretty good in my opinion. I do have mixed feelings about chicken meal; on one hand, it has a higher density of protein than chicken meat, but on the other hand it goes through more processing. The best brands tend to use both, I've noticed.
My rules of thumb for selecting...
Your kitten is just beautiful! He does seem like he will be a fairly "long" cat, but not necessarily bulky. To see what milestones to expect as he grows, I recommend this illustrated kitten growth chart:
http://www.raising-happy-kittens.com/kitten-growth-chart.html
Keep us posted on him as he...