get the compact. Odds are very good your current RD will not handle the 32 tooth cassette.
And the spacing and shifting will not be as good as with a more closely spaced cassette.
Depending on how much lower gear you need, you could go with an 11-28, and see if that's enough for you, but it won't be a big difference.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.