Good morning, Beel. I have a 2012 which is basically the same platform as yours. If your suspension is still oem, you definitely need shocks. I replaced the Ranchos on mine within the first couple of months. Air bags with an onboard compressor and WiFi/Bluetooth are really nice to have. As wing advised, check your tires. My 20's were rated at about 3600 pounds each; I replaced them with a higher capacity tire that gave me 4080 for each tire. Again, if yours is as mine, it is rated to tow 15,700 pounds with a GCWR of 23,500.
'17 36RSSB3///2012 F350 KR, LWB/SRW, Bilsteins, antisway bar, Bilstein steering stabilizer, Airlift air bags, wireless compressor, 295/20 tires at 4080 pounds each, oversized finned aluminum diff and trannie pans, synthetic fluid, KEM, PIP, & Tyrant tunes w/SCR4 programming, Edge CTS gauge monitoring, G37 2017 turbo, ATS Stage I transmission.