plus, the goal for this car is to be that of a stock A body small block car. With the amount of weight savings i already have done(roughly 417 lbs) i should be able to come in around that mark. i'm estimating about 200-250 lbs in the cage.
I hope with all that attention to weight, you are also figuring out how to rebalance the car to get closer to a 50/50 weight balance.
All the stuff you've talked about so far removes the weight from the rear half of the car and with a heavy big block up front...your balance is going in the wrong direction.