Hello there!
Cornell’s one-year program is excellent. It’s one of the top two one-year programs in the US (along with Kellogg). You are right that it is a bit easier to find a job in a two-year program (because you have that internship and that summer between). But you can also make up for the disadvantage by working harder on your networking and job search. So it is a great program if you are ready to do that.