Problem is at that price people with good 3drs are either going to want a straight swap or money on top I bet. And you can't really use a 3dr every day easily anyway, although they are very nice.
What I've been thinking of is an RS Turbo as a second car and just keeping the Mondeo, is that a possibility for you? Although I still want another Escort Cossie really so I can't make up my mind to save my life!