I'd personally go with the ultimate package. I love my sunroof, in unfortunately this truck didn't have it and I really miss it. Never came close to hitting it with my kayaks on my old truck. Built in navigation is nice, usually a bigger screen and better sound on the train by turn directions.
PTO, not really sure you'd need that on a truck, use my tractors every weekend. Wheel liners to me not needed but a good set of mud flaps are. Tailgate step and fifth wheel package a definite yes.
Enjoy your new truck, love the look of the Ford but a GM man at heart.
2008 GMC Sierra 3500 SLT DRW D/A 4x4 (Big All)
2006 Ford F350 PSD SRW King Ranch 4x4 (Henry) (Sold)
B&W Companion, 90 Aux Fuel Tank, Scan Gauge II, Curt f/m hitch, Swagman XC
2015 Forest River Sierra 360 PDEK
DW Diane, DS Michael, FB Draco and Sabian