What I ended up doing was using the jack to raise and compress the shocks, as others had suggested. It was tricky getting it all lined up, but once I got the first one done the second one was pretty easy. I would definitely recommend this upgrade for the price. Well worth it to me.
Installed the Eibach rear shocks yesterday. Definitely made an improvement to the handling, much less wallowing/rocking when turning and going around curves.
I disabled the fake engine noise over the weekend and also noticed a big difference. Major improvement in my opinion. I honestly don't know why they would incorporate this into the truck, but am glad there's a way to disable it now.