The point of unequal well-tempered tunings is that the keys don't sound the same. Temperaments like Werckmeister III or Vallotti or 18th century French ordinaire are meant to be usable in any key while letting each have its own colour. (Vallotti is quite commonly used on fortepianos.)
For most of what you're doing, you could probably get away with a mean tone tuning (which isn't well-tempered, but does a reasonably good job with the keys around C Major - it was the original compromise), but F minor would likely be problematic for the standard 1/4-comma temperament. A 1/5-comma or 1/6-comma tuning might do the job.
All of these temperaments, well-tempered and mean tone, give the brightest character to C Major, with an increasing dark flavour as you move away by fifths.
To find a tuner, you'd best make use of any contacts you have in the Early Music field, and see if they know of piano tuners who deal with this. (Yeah, there are apps for tuning, but you'll probably want someone who can do it by ear, because on a modern piano, you'll also need the tuning stretched to deal with the inharmonicity of modern piano strings.)