I've only purchased a couple of small routes. And they we're semi organized, and even they were a headache. All sorts of keys, product to figure out and machine parts everywhere. So what you're talking about would be a huge undertaking.
Also, why does he have so many machines and only 19 locations? I think i would pass, and ask yourself how much would it costs to just buy brand new eagle machines and place them yourself. 19 locations sound good, but depends on how they're doing, and even after I've taken over locations, just naturally you have to pull some anyway. Places close, change ownership, remodel, you name it, all of which i've experienced.