Got mine finished up today. Super easy build. I fired it up today to get my feet wet before a camping trip and I'm amazed. I lit six coals and dumped them on a small pile of unlit coals. The temp rise to 210 with the vents wide open. Closed the bottom vent half way and she's been sitting at 230-235 for two hours. It's the easiest thing I've ever cooked on. And it's my first ever brand new Weber!
I basically used an 18 charcoal grate, 12" terracotta pot base, 2 14.5 cooking grates a imusa tamales pot and some SS hardware. I highly recommend this project. Super easy to build, easy to use and it's pretty cool.