Last fall I was thrown on a very high-end condo project (a client bought out a whole floor on one of a few new towers being built) and we did normal design-build plans for that project. But again that was a very upscale project; the "client" had their own arch, int designer, tech, security, etc. firm(s) so we all just ran it like a typical Arch and Eng project. So I guess I would mock it up as a plan, schedules, and selections type of package.
I know KeithB used to do high-end cabin designs so maybe he'll have a few suggestions.