There should be a way to pause upgrade manager

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  Sorry if my answer is too simplistic, but, when you run the update manager, you can choose what you download. Simply un-check everything, then check only some of the updates. That way you can choose the packets by size. I do this my self and it works just fine. I might also add, run the update manager everyday, so as not to be overloaded with files. Once a day is better then 50 on Friday. I also run mine at night when the bandwidth is greater, late, just before bed time. I just leave it running. The down load manager is a very light piece of software, so its problematic to add more features. But if, BIG IF, you were to hit cancel during a down load, it would install the fully down loaded packets, and discard the one it was working on. You could then pick up where you left of later on. But I suggest the first tip not the last.