Yes to all of the above, except for the robe. I'm sure if there were dragon-sized robes, he would be quite taken.
With the exception of Shen Li (and he, I imagine, only because he's often on the Air for weeks at a time), all Dragons seem quite taken with gold and jewels and other such shiny things, so while I may Regret Temeraire's materialism at times, I am forever grateful that he seems content to limit it to his talon sheaths and breastplate.