I got this for my fifteen yo son (aka “Even After Dinner, Giant Boys Eat”). (Okay, not because I was clever enough to think of it ahead of time, but because I stumbled onto one of Amazon’s “lightning deals” at holiday time.) Perfect.
As you suspect from reading the description, this package has everything you need, which was really a blessing from my perspective. As others have suggested, we’ll gradually replace things as he wants… strings, of course, the strap, maybe some new picks. I didn’t realize there was even a tuner in the set, which is great.
One thing extra I feel we immediately need is a stand for the guitar. This is partly because things can get a little rambunctious in our house (e.g., the dog and the boy chasing each other around) and I want the guitar to be safe. I also don’t really want him to put it away; I’d like to leave it out in the living room so that he’s more inclined to pick it up and play.