Hoses can out last belts. However, a hose that breaks on the road means sitting on the shoulder waiting for roadside assistance. Compared to the cost and inconvenience. Changing the hoses is a good idea. It not an expensive maintenance item. One less thing to worry about.
Good luck and Happy Trails!!
Tony & Ruth........... FMCA#F416727
Newmar Dutch Star 4320, Spartan MM Chassis, Cat C9, Jeep Grand Cherokee,with Hemi, hooked up with a Blue Ox Aventa LX, and Brake Buddy.