Great story, and good find! A bit after I bought my AQ, I sprung for the stainless steel cart and larger casters, which have made the use of it (rolling it out of the garage to use and back in when done, and storage of all the wood chunks I use) just a joy, A bit pricey, but well worth it to me. I did a couple of racks of loin back ribs for Christmas for a small group. I've been experimenting with cooking them at 250 instead of 225, it takes about an hour less to finish but I think they turn out a bit dryer, even when the toothpick test is just marginal. I think I will go back to 225 and accept the extra hour or so of cooking for the juiciness.
Let us know how your first cook turns out!