Just keeping you posted: I got a deer from inside the house!
First full day I was back in Texas--that evening we set up shop in the guest bedroom with the crossbow. Really big doe walked right into the killzone, shot went through her aorta and lung; she didn't make it more than 25 yards. Lots of meat.
And it's totally legal where my brother lives, also. You can hunt on your land in the semi-suburbs as long as the projectile doesn't leave your property. We still have a few tags, so might try to get another one before I leave. I'm making jerky as we speak.