To be honest with you mate I would try to avoid a pup like that! Although it is probally possible to train a pup like that you'd be so much better off with a worker, What if it doesnt go the way you want it to, and then you end up with a dog the family are all attached to, either you'll have to get rid of it to get one that will work as you want or end up with 2 dogs. Just save up for a bit longer and get the right dog for the job