thats what im doing, i got annoyed when it kept going from 100% to 30% right after that so im currently downloading the client and so far its taken me a month to get to 3k mb, spotty internet seeing its one lvl above dial up
I have several in-game friends who live in the hinterlands, where neither cable nor DSL providers tread, so I know what you mean.
But there are far fewer patches needed for the current installation files, so it may go more quickly for you. And you'll probably avoid some of the texture corruption issues that cropped up with older patched clients.