Hmmmm.. If you hit hard enough to bend that lower arm then I think you prolly cashed the hub as well
I've haven't had to remove the hub carrier off of a new celica yet but the mechanics are the same as the ones I have done. Like I said before the entire brake assembly will come right off by removing the bolts behind it. And you already know how to get the carrier off.
Doh! I just priced out the parts for you from my guy and heres the break down
$173.00 for the knuckle
$279.00 for the hub with bearings (this may be all you need)
$46.64 for the brake assembly backing plate
You'll need to get the new hub pressed in to the knuckle