Your listed lift and ICL don't match up to the XE274HR Comp spec sheet so you must mean the XE274H, not HR.
DCR comes out to 7.5, not bad. (I personally would use a 1/2 step step smaller cam, like that in post #62; same DCR, a bit milder idle and a tad more gas mileage.) With 3.91 rear gears and the tire size, you'll have pretty decent wheel torque regardless... more than the tries will grip from a dead stop... and about 15% more than RF's 3.55 gear and 26" tire.
IMHO, a TC in the 2500 range is about right for that DCR, etc. We use a 2200 stall TC in an 8:1 DCR engine with 3.55 gears and it'll break tires loose at a bit over half throttle from a dead stop in a lighter early A body.
