Didn't take too long. AFA here in SF has plenty of seiryu stone, as well as some bonsai shops. I've used these same rocks in several other scapes, so I've had them for a while.
I'm going to have to tear down this scape soon in order to setup the UGF; I was just bored last night and decided to mess around with the hardscape. Took plenty of pics to make sure I get it the same or as similar as possible the next time around.