Nice, getting power to the ground through 4.10's is a delicate balance.
Think about some more intake mods over the winter. An uppler plenum and throttle body won't gain you much peak power but they will pick up a few ponies on the bottom end and sharpen your throttle response a good bit.
"Posterity! You will never know how much it cost the present Generation to preserve your Freedom! I hope you will make good use of it. If you do not, I shall repent in Heaven, that I ever took half the Pains to preserve it."