When our car was normally aspirated on gasoline I made my sons use a 3-2/20 suit and boots. We didn't need that much per the rules but I knew the day would come when we would run the blown class. This year was the year for that so now I make them wear Nomex too, again more than is required by the rule book but if you're on fire at 250+ mph it might take a bit to get stopped.
I didn't see any pricing on the Wickers stuff JD. FYI Nomex tops & bottoms sell for about $50 ea. so it might be worth looking at in a lower class.