If you get her into agility, the club should have a big, open training field! Our club has a huge fenced yard, big enough for a standard agility ring (110 x 85), plus an indoor training area for when it rains - not quite as big, but it's in a warehouse, probably about 85 x 50.
Well, she's not quite 6 months old yet, so not quite old enough to do agility. Darn... ;)
susie