Hope you get it, it needs a good home!
Don't worry too much about the price if it's a combo you like. By the time you put another 15k+ into the resto, the purchase price becomes more insignificant.
I like silver or any light metallic on these cars.... it really highlights the body lines.... and fine lines they are!
Bill may chime in on what parts he has avail. Did you see the winter thread on his blue/white top car?
Wheelz also has a bunch of '66 parts he got from Elliot.
I haven't been looking on eBay lately to see what's still on the market partswise.
Stainless trim should last forever unless someone drills holes in it when they can't find the correct clips!
I think HL switches are still avail new. Check Rockauto.
CARS (oldbuickparts.com) and the Buick Farm are other good sources for parts you can't find elsewhere.
I've been doing some re-restoration on my blue '66. The BCA Nats in Allentown, Pa is in 2 weeks. I first restored/modified this car in 1982. Feels great to be working on it again.
Keep us updated on the purchase!