Quit over thinking everything!
Seriously, fifth wheels tow so much better with so much less hassles. But, sadly you probably wont be very happy with the fiver choices considering your truck. Good news though your truck could be worth far more than ever. Good 7.3 are in high demand. Bad news, your truck has a very low load rating, and weights quite a bit. Remember, a fifth wheel is going to drop around 20% of its loaded ready to go weight directly on the rear axle. In addition you have to add the hitch weight of between 150 and 250 pounds.