I would also consider a manual regular fiesta (and swap in st suspension) or a focus SVT, both of which would still handle very well, even if they lacked the power of the ST.
I would consider a 3 pot turbo, manual 'regular' Fiesta as well.
They may be even more rare/hard to find than our rides, but when you do find one, it would not be nearly as $$$$ for the same MY, mileage, and condition.