Not really sure what that 28-80mm will offer you over your kit lens apart from a few extra mm at the long end.
Optically, this lens is pretty poor and build quality is little different to the kit lens you have. The lens was released in 1995 replacing the far superior mk1 USM version of the lens.
Save your money, maybe upgrade your non IS kit lens to the IS version instead. You will get IS and a sharper lens to work with if you do.