The traction control is not going to make that big of a difference. It is active up to 20 MPH even when disabled, but the fraction of a second you might lose is nothing to bitch about.
I personally have no use for it, even living in New England in the snow. Technically, if you know how to drive a standard, you dont need T/C. Just start out in 2nd gear.
The SVTf does VERY well at the Auto-X with a good driver. WIZARD Racing (Buddy), a member of my local SVT club, torches just about all the Cobra's (except one), all the Lightnings, and even someone with a new EVO 8. His car is bone stock except for K&n filter. Have to take into account he has been Auto-X'ing for many years, and also has an ITA Escort GT. Experience pays.
I am selling my SVTf. Email me if you want some info.