if you want a dog for bushing, a failed digging terrier or a terrier x beagle or spaniel will be the best bet, if you want a dog for ferreting, then id stick to a small lurcher, if you intend on lamping the dog aswell, get a slightly larger lurcher an itll do both well with the right time put in, tho its gonna be your dog an its gonne be with yu a long time, so if you get on with gundogs, then get 1, a gundog will learn to ferret an bush for you, dont rush in kid, take your time an choose wisely
Thanks =)