in my opinion i would steer clear of somthing like a first cross colie /grey, whilst these dogs can be great hunting dogs, and can be easily trained, they can also be hard work at times. also you may be limited in what it can catch especily if you get a slow clody one from a litter.
i would go for a good lurcher to lurcher mating, with a good propotion of sight hound in there make up, of course this is all dependant on what size of dog you want.
if you have somthing medium sized with a short to brocken coat, its obveously going to be easier to to look after . somthing like whippet/gre