2015 TRD OR AC

Hi,

I know you guys hate these noob questions, but I'd really like to know...

Are the TRD OR rear leafs different from non-TRD leafs?

I'm picking up SOME second hand wheeler multi-leaf AALs. Can I install them with my OEM leafs and shocks?

I'll match them with Eibach 1.6" coils on the front.

I will be mostly highway with rare, very casual Off Road, but I will be pulling a small hybrid camper half a dozen times a year.

Are 5100s significantly better than TRD OR OEM shocks?

How many miles can I expect the stock leafs with Wheeler AAL multi-pack to hold up with this type of use? I DO use a weight distribution hitch, if that helps.

Steve