You should only get him a dog that you would be willing to take on yourself......in case you end up with it. If he feels that he must have one ready for action 'right now', it may be yet another passing teenage fancy, to be cast aside when this time next year his mates have moved on motorbikes, nightclubs, women or whatever appeals to them..................then the poor dog may be left in a pen or indeed yet another 'due to change of circumstances, good working home required for 100% worker'