advice on buying my sons boots

hi, in December this year my 14 yr old son and i will be hiking the Milford Track together. he's growing like a weed at the moment so i am going to wait until about 3 months out from the hike before buying him his boots.
seeing as he's still growing i dont really want to buy him an expensive pair just yet, but i dont want to buy inadequate boots either.
can anyone suggest some brands to look at for youth? this hike in November could well be the only decent hike he will get to do in these boots due to the fact he will probably outgrow them quickly. hence the reason i dont want to spend too much money on them.
Of course, they must be suitable for wet weather.
so, any suggestions? thanks in advance
seeing as he's still growing i dont really want to buy him an expensive pair just yet, but i dont want to buy inadequate boots either.
can anyone suggest some brands to look at for youth? this hike in November could well be the only decent hike he will get to do in these boots due to the fact he will probably outgrow them quickly. hence the reason i dont want to spend too much money on them.
Of course, they must be suitable for wet weather.
so, any suggestions? thanks in advance
