I got most of my parts, particularly the brake pads/rotors from pelican. The pads (pagid) were around $80?? and have the hole for the wear sensor already, which I ended up re-using. the rotors were zimmerman and were about $130 for the pair, iirc.
I changed the serp belt too and that was the easiest belt change I've ever done b/c it's so accessible once you remove the inspection cover.
You're right about the coolant to the extent you can't use regular old prestone. If you look at some of the sites, like mike focke's, he talks about other non-porsche coolants you can use, which are much cheaper. the Havoline coolant I got is a phosphate-free, silicate free extended life and much cheaper (i.e around $14 at o'reilly's).
suburban, I too have a lot of sorting out to do, but it least it's winter, right?
although today it's sunny and in the 70s
so I should probably pick up the pace.