Download size, approximate

Can anyone give me a rough idea as to the size of the download I can expect currently for W62-x64, selecting Service Packs, Security Essentials, C++ runtime and .NET, i.e the whole lot?
I usually use WSUS on a download-unlimited service but I have a problem at the moment only having access to a mobile broadband service with obviously a fairly limited download allowance.
I don't want to start the download, only to see it running to a couple of gigs or more and thus have it blow my quota for the month and by that stage it would be too late to do anything about it.
Thanks,
I usually use WSUS on a download-unlimited service but I have a problem at the moment only having access to a mobile broadband service with obviously a fairly limited download allowance.
I don't want to start the download, only to see it running to a couple of gigs or more and thus have it blow my quota for the month and by that stage it would be too late to do anything about it.
Thanks,