Scot, not sure where your logic is coming from. With the stiffer GW fronts and F-body bar and stock rear springs with the HO bar, you'd be nicely into an understeer condition. I'd figure you would want the HAL rear shocks to go with the fronts, but you certainly would want some good damping in the rear, otherwise, you could have some side to side oscillation with the heavy rear bar. Not saying the HD Bilstein would not be enough, but it seems the Sport Bilstein would be better.
Aaron, having had 150Lbs in the rear with bags compensating(idividually valved), I can say that the tendency is toward neutral to slight understeer, stock. Adding the firmer GW springs would put it solidly into understeer like you want. Also, with an underdamped shock like the Monroe SensaTrac, which I was running, at that load it gets pretty bouncy, where now, with the firmer Monroe Severe service, it's actually smoother than empty.