At 8 months old she should already have been broken to all domestic livestock: the older the dog the harder it is to teach them what they can and cannot chase.
Teaching a dog to drop will not take the 'go' out of a dog at all, and IMO most lurchers are relatively easy to train to retrieve, maybe not so as they actually put the thing into your hand, but at least near to you.
Have you had the dog since a wee pup or is it a recent acquisition with no previous training.? Any lurcher worthy of the name lurcher can be trained to a decent standard, every bit as high as a gundog, and probably a