KZ has a pretty decent reputation for quality. If they had a floorplan I liked, they would be at the top of my list. You're truck will do fantastic with the specs on the 3722T. You didn't say what year it was. The 2015 F250's are coming with the taller rear suspension blocks and if you have the camper package, the overload springs too. If it's an 11-14 the overloads still come with the camper package but you will have the shorter rear blocks. Other than those two things, the 250 is identical to the 350 so if the trailer works for your needs, then your tow vehicle is up to the task 100%... Air bags will help level it if needed but you've got a fairly light pin weight there so they may not even be necessary. Remember, toyhaulers are different than regular 5vers as when they are loaded and ready to travel, the pin get's lighter, not heavier due to the weight in the garage...
Regards, Rodney
TV - 2017 F350 SRW CC SB 4X4 6.7
TH - 2015 FR XLR 395AMP