Just bought a new trailer Keystone outback 26RLS..well within limits etc....have an equalizer hitch installed, with all the bells too.....I have 05 4x4 king cab SE...did not get the factory tow, but I do have "tow mode"...is there anything I need to add?? Have the trailer brakes added, and had my Rotors upgraded right a away tot he bigger ones (old ones warped within 5k)....what should I look at doing?? I have heard new tires (no acronyms please)....do I have the tranny cooler already??...what are air bags??....are my shocks good enough??...just some advice to ease my mind....also should I be in "tow mode" the entire time I am towing??....Thanks!!