Yep that 5er loaded ready to roll is probably over your 1/2 ton trucks tow rating .The HEMI and transmission will pull it without an issue it's the trucks frame,suspension,axles,brakes that are being pushed beyond it's limits. Any of the true to form 1/2 ton towable 5er's are gonna be more in the 6700# area dry. As stated above airbags will help level the ride I have them in my Ram 1500. Another option is Timbrens wich are basically a heavy duty set of rubber stoppers in place of bags.
2013 Wildcat 323QB
08 Silverado Crew Cab 2500HD Duramax-Allison
Twin Honda 2000 campsite friendly generators
Nights camped in 2014 = 19
(2013 = 36)
(2012 = 42)