Sounds great - my lurcher seemed to live to run - many was the occasion when I would carry him home because he had run himself into the ground ( was the deerhound in him)
Having known a number of greyhound crosses and greyhounds - check Pip's jumping ability. Mos can clear 4' without breaking stride, 5' is a joke and 6' is a bit of a laugh. Makes all the difference where you feel safe keeping them.
I learned that not only do they run like the wind but jump like a flea too late.
Glad she was good off the lead - too many rescue greyhounds are not allowed off because they are a liability to the local wildlife and do not come back, they are a joy to see running.
R