I've never even heard of a long haired whippet.
Keep in mind, too, that just because this apartment does not have a weight restriction does not mean that all apartments don't have weight restrictions. Personally, I've moved to a different apartment every year for the past 4 years (and I'm about to move out of this one after only 6 months), so it's good that my dog's only 7 pounds. If I had a 30+ pound dog I might have some problems. I work with a rescue group and go to shelters a lot, and it always amazes me that people drop their dogs off just because they're moving and can't take them. And the people (I do see them sometimes) are not heartless, cruel, negligent, or anything, they really do feel bad that they have to let their dog go, but ultimately they probably just hadn't really thought it through to begin with.