Thanks for all the help, everyone! I think it sounds feasible then to have one.

Where I'm thinking of putting it actually can get pretty water logged when it storms, but it doesn't sound like that would hinder it at all and in fact may be a great spot. The spot's also at the farthest point away from the house so wouldn't interfere with anything there and there's loads of room surrounding it, which would give it plenty of space to spread.

The reason I asked about how fast they grow is that I'm pretty impatient and would be wanting to see it getting big fast! It sounds just about perfect actually. I guess I just need to go see how much it'll be now.