10 weeks sounds like a long time to wait for anything that you mail ordered and paid for - I mean, unless they're actually foraging for your driftwood I would expect it to take, I dunno, two weeks? I suppose that since it's backordered you shouldn't be too worried about it, but obviously the extended time frame isn't optimal. If they don't make good on the order, let us know, but I think you should be fine. I purchased my driftwood from Aqua Forest Aquarium, they've got some really nice pieces. Aqua Design Group also has some great pieces, much, much different than what I'm used to seeing; both the Senske's (ADG) or the Lo's (AFA) will work hand in hand with you to pick out individual pieces in order to best approximate the look you're going for. Both of these options are rather pricey, however.
Badcopnofishtank, as mentioned, has some really nice manzanita packages, and I've heard great things about manzanita.com as well. Good luck with your order, and happy hunting if you decide to look for driftwood from another source.