Thank you,
Heatsinking is a complex problem, but if you familiar in the field then you can create very efficient system.
To help out with Cu vs Al I did a quick web search and found this:
Nice pdf. collection and general info
Hint why copper is the key here, very nice and compact write-up
to zeropointbug:
I think it is very difficult to find a member on this forum who haven't seen your Quark:).
And, yes I can make you plates, no problem, especially I am working with Mike's help on this one as well.