I'm with Rich...
Your trailers are at both ends of the spectrum...light and pretty heavy.
Unless your willing to spend the "big" bucks for a four wheel stainless upgrade I would opt for the Premium AC pads front/rear.
The only other option I have experience with, on our 95 2500 Burb I installed Bendix Ceramic. Worked very well on that application, disc front drum rear. The AC's are working great on the 06's 4 wheel disc's.
"Sticks & stones can break your bones...and hail will dent your Airstream"
So when is this..."old enough to know better" supposed to kick in?