You know I've been thinkin about your 'Must Haves' question, and I think much has been covered. Then it popped in my head, is there something that you don't want? And actually one thing that I'm not nuts about is that I have the Laramie with the projector beams, and I remember trying out a couple of 3D's back in Oct/Nov of last year after I got out of work so the sun went down fast, and the Big Horn I tried had the regular halogen quad style headlights which were better. It doesn't mean that the projector beams are bad, there just ok, or kinda crappy for a projector beam, which you expect more from. I don't know what the driving light options are for each trim level though so you would have to check on that.
I also got a rear defroster, but then ended up putting a cap on, so coulda saved some money there. Also didn't want the CD player, because every factory unit I've had would eventually crap out, and they cost so much money if you want to replace it with another factory unit. So now I'm either streaming (Pandora, TuneIn, etc.) or transferring from my iTunes library to either my phone or one of my kids iPods. Last (sorry, on a roll here) the chrome clad wheels are okay. I live in SoCal, and with the summer heat, and just the nature of hot brake dust flying off it makes small minute pits in the wheels, and pretty much are hard to get really nice as when new. If you can get polished aluminum you would fair better I think.