After inspecting the truck post-neighborhood cruises, I found that I missed a huge, glaring issue when I altered the mounting points and lowered the coilovers... the rear toe bars are touching the frame when the truck is just sitting.
Fortunately, Flat Out Engineering sells a kit to address this exact issue, so I've got that on order. I considered trying to find a DIY solution to this to save money, but sometimes you just need to pay the person who already found an elegant solution to your problem.