Here is a recent article in The Detroit Free Press about a Michigan Prison program that helps "rehabilitate" greyhounds just off the track. Prisoners foster a greyhound for ten weeks and conduct obedience training for the dogs, which are then ready to proceed to foster homes and await adoption.
Greyhounds are wonderful pets. They are gentle, docile, and highly affectionate. Please consider greyhound adoption. The added bonus: greyhounds are easy to "housebreak" as they've always been let out of their crates on a regular schedule (generally, every six hours) to "take care of business."
Don't think that your home is too small. Bastet was adopted in NYC, and we lived in a small apartment together for over a year. Indoors, greyhounds are "couch potatoes." Outdoors, they like their walks.