If your board you need to scratch the itch and hope it doesn't become an open wound. Understandable tho a project is only ever a project until its completed.
What then?????
A new project
Just make sure you have the cash to start the project before ditching this one.
Out of interest what they offered on yours and what's the other up for?
The Clio has taken time and effort, is unique, a one off and you see a few M3's around. The older ones to me dont stand out as something special. Personally I'd enjoy it for a while