I have a 2019 2500 CCLB 6.4 Hemi; I absolutely love it. 3100lbs of payload, rides good, and the Hemi is well matched with the 8 speed auto. Are you looking at a 2014+ truck? The rear coil suspension rides awesome compared to leaf springs. Empty can be a little rough but with 1500lbs in the bed it rides better than most cars and SUVs.
I went through a debate with myself about going with a mid size truck. A realistic look at what we do led me to the full-size crew cab long bed. It’s long and wide, but we stick to Forest and BLM roads. Some of which are washed out and tight with brush, but a full size pretty much always fits with some pin striping.
AEV is basically a spacer kit, but it does allow you to retain factory payload and ride but only gives you some lift.
When I get the funds to spare I’m going to order Thuren’s Overland Extreme system for mine; 3”/1.25” on the Hemi 2500. Thuren has a lot of good info on these trucks. My personal opinion is Thuren’s Overland system is a good balance between performance and cost. King Shocks are awesome, but most of us do not need that level of performance.