Some one with lift kit knowledge based on experience, please help

i have owned 4 trucks in 7 years and lifted everyone of them just to sell them becuase i lifted it. so i decided to get smart and i bought a 06 chevy diesel truck 2500 with the thought of never lifting again and having a motor to last forever. well i can't handle being so little so i have so questions. i want to be able to tow a 5th wheel 28-30 ft. toy hualer and not rub with tires of 37". is it possible? if so what lift and size and why? also what is your experience with it. i don't want to lift if it will wreak this truck i plan on keeping this truck for 10 years and want no steering problems. thsnks in advance -james