Fixing Emacs and Latex on Mac OS

So I bought a shiny new macbook, and immediately set about installing emacs and latex. A few hiccups. First, emacs couldn't find the latex executables. This was remedied with

(setenv "PATH" (concat "/opt/local/bin:/opt/local/sbin:/usr/local/bin:/usr/local/sbin:/usr/texbin:/usr/bin:" (getenv "PATH")))
(setq exec-path (append '("/opt/local/bin" "/opt/local/sbin" "/usr/local/bin" "/usr/local/sbin" "/usr/texbin" "/usr/bin") exec-path))

Next, I typically want pdf rather than dvi output, and I'd like to use Preview to view these. Emacs defaults to Evince, which is unhelpful in a gnome-less world.

(setq TeX-PDF-mode t)

This can be set in Customize, but trying to do these next two was problematic, since there were drop-down menus in customize defaulting to the builtin list.

(setq TeX-view-program-list '(("Preview" "open %o")))
(setq TeX-view-program-selection '((output-pdf "Preview")))

Now I'm a latex compiling machine!