We're not going to be able to give you an accurate answer. You have rough weights on what you want to add, so have someone that weighs about that much sit on the front of your truck. Otherwise, just put the damn stuff on and adjust your torsion bars accordingly.
while it could have been said in a nicer manner, i totally agree,
stick someone of that weight on the hood and step back, its not going to sag more than 1/2 inch over all
if it does crank the torsion bars up
for the money i wouldnt bother with aftermarket t-bars, you could just about sas the thing for the effort it takes to replace them