I finished my dual battery setup with both batteries in the stock location. Adding 50lbs up front lowered it another 1/8", and initial feelings are that it noticably softened up the ride.
I have now added a total of 230lbs over or in front of the front tires. About 60 of that is right over the tires in the form of my hi-lift and hi-lift winching chains, while the rest is on the bumper.