You look to be in good shape, Randy. Your ash can ring is in place, and all you need is the ash can. I think they sell those two things bundled together from the factory, but you might be able to find someone with a spare around here. Any ash can for any One-Touch Gold, Performer, Master-Touch, or One-Touch Plus should work just fine.
And regarding those horizontal pieces, it might be worth another call to Weber to ask about that. It looks to me that all you need is the hardware to make those connections, and they might just have that stuff in stock still (I've gotten hardware for my SS Performer, and for free!) What I've found is that there is a wide range to the expertise and creativity in the Weber Customer Service folks. It sometimes pays off to call back later to talk to someone else. (Oh, and don't assume that the female CS people won't know as much-- some of them are really sharp on Weber history, and know exactly how to find the 'secret' part numbers you need.) I've also had greater success, I think, by calling later at night-- folks then seem to be more knowledgeable and resourceful. My theory is that newer employees get trained during the day, while the more experienced folks are allowed to work on their own later at night.
Good luck! And congratulations on a great Performer!