Benefactor
My Jeep fully loaded was way over GVWR. When I arrived at OTG 2017, I was at 7300 lbs. The AEV springs where compressed at this weight. This gave me little up travel, and I was feeling my bumps stops too often for my taste. The OME springs, gave me back the same lift loaded, that the AEV gave me unloaded. The ride quality was great, even with my Jeep being heavily overloaded.I'll second what others say and ask what problems you've had with the AEV kit? Assuming suspension and steering geometry are ok, from your description it sounds like loss of carrying capacity could be an issue?
Regardless you want coils matched to the loads you carry. I'd reccomend estimating the added weight to your Jeep (bumpers, skids, racks, etc), as well as the added gear weight from trips. With that figure you can then check with aev to see how their coils coils compare with respect to load capacity.
If you have a large variance in loads I may suggest a dual-rate or progressive rate coil, for both comfort and performance. I'm not sure who's all making these for JK's but I know Dobinsons Suspension does. Could be worth a phone call at least.
Edit: just checked, that kit comes with progressive coils. I'd still be curious what loads the coils are rated at.