It's deff your drop keys that is giving you the rough ride up front. Spindles are 10 times smoother and deff cut off your rear bump stop mounts entirely and install some 3/4" bumpstops.
My truck, the ride is smooth as butter and I'm running 26" rims on 30 series tires and it rides amazing. It's taking a lot to get where it's at right now but it's nice. I love the ride on mine. I have Belltech spindles with untrimmed bumpstops up front. And DJM 5.5" rear drop springs, free travel mod, 3/4" bumpstops, air lift springs, Belltech shocks all around, Spohn adjustable 4-link bars and adjustable panhard bar. The rear took a lot of work. Had to replace lots of bolts in the rear with proper sizes to get rid of any slop I had and now that I've replaced bolts with all the right sizes it doesn't clunk at all anymore.