I personally wouldn't go for a straight cross of any sort first time out.
I'd be looking for a nice mix of honest workers from a few generations of breeding,and keeping an open mind on what breeds are in there.
at the moment you don't know what breeding you like so don't get bogged down with what breeds.get an average size lurcher from a decent breeding ,and wait for the right one ,it will come along,most lurchers that have had a kind. Upbringing will be loyal and eager to please