Good luck! I posted something about a month ago for Tonga Branch rock, and I guess there is a ban from collection of rock from the Tongan Islands for a little while. There is someone who may be breaking down thier tank, a 37 column which is completely filled with only Tonga Branch. I told him i'd buy it all for whatever price he wanted, and i'm sure there will be some left. I'll keep you posted, but it might be a little while. I think he is going to break down his tank and sell off what stock he can. His corals are only very small frags, but he has a very bright RBTA and some pretty cool fish in there. Tank is drilled for 2 PVC overflows, and the return from sump is split into 4, with a current switching thing. Anyways, i'll keep you updated on the rock.
Also, just to let you know, there is Fiji Branch rock which is always available. It's not the same in my eyes, but you may like it. It's just larger dead pieces of Acro, and looks like a dead coral shaped rock. IMO, i like the randomness of Tongan rock much better than the Fiji, but you should check it out and see if you like it.
I see under current tanks, you have a corner bowft listed. Well, if you havent yet, come on over to the corner tank thread and share your loves and frustrations that come along with the corner tank ownership!
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1592474
This thread has been going for a little while now, and i believe there are around 70 corner tank owners who frequent the thread, and everyone on there has some great advice. Hope to see you there soon!