read your post, and to be honest mate as the dog (wont) see a alot of work + and live in your house. I would go more for a whippet+grey type dog, be easier to live with+smaller than a colliexgrey. Ive had quite few lurchers over the years, and colliexs do need alot of work really, so i do think a whippetxgrey type would be better for you. as yout saw one of my dogs on your post(3/8 collie 5/8 grey) they are big dogs, and a 1/4 collie 3/4 grey will be as big. My dog now 1x colliexgrey Bryn is 25in 58lb, smaller than the above xs but still a big dog. ( none hancocks) all local bred dogs
Bry