I would get her working first mate she will want a good few seasons of real work behind her before you even think of breeding her, She may not work out then you wouldnt want to breed off her. Just make sure you are breeding for the right reasons to produce good working dogs from good working parents, and not just for the money.
Good working russels are hard to come by for the very reason that too many untried dogs are being bred from to fill owners pockets and to parade round a show ring.