I've got a diamondback two burner as well. I've had it for about 2 years now and really enjoy how much more work I can get done over using my coal forge. In fact, just got rid of my coal forge and all my coal at a yard sale last week.
One thing you can think about adding is an idle circuit to your gas line. It allows you to reduce gas flow to the forge when you want to. I believe there are photos in the gallery here, but it is a simple design. If you can't find it here I can post some photos.