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lrsm2, what you are describing as hesitation while cold may have a few culprits.
When bringing a car back to life after sitting for so long I'd start with an extensive tuneup.
Siphon out all the old gas that may be in the gas tank. Replace the fuel filter. Get a new set of spark plugs (ngk copper, champion copper), plug wires (i only trust a set from toyota), distributor cap and rotor. New air filter.
Another thing that may affect rough cold throttle response is plugged up injectors and cold start injector.
A complete fluid exchange would be on my list of priorities as well (oil, transmission fluid and coolant)
If you have a faulty sensor, a check engine light and a code will likely appear.
An Oxygen sensor may not throw a constant check engine code, but may be faulty as well thus reducing the peppiness of the engine.
While replacing all coolant, I would opt in for a new thermostat and radiator cap.
If all those things have been addressed and the vehicle still acts up, it should be timed (cam/crank timing), but that does not seem necessary, given that throttle response improves once it's warmed up.
oh .. and definitely look at the supercharger oil level and add if necessary. SC oil is available from toyota (expensive) and from Ford (half price if not less)
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