How much space does armory and the latest version of Bitcoin-Qt take up, together?
In total, it's about 61GB for me right now. In general, it should be about twice the size of the blockchain (which is always growing).

There can be some intermediate files (e.g. bootstrap.dat, 21GB currently; or Armory's similar torrent) involved that increase how much space you need during initial setup.

These can be deleted when you're done using them. (In the case of bootstrap.dat, that's when Bitcoin Core finishes loading data from disk; it's not deleted automatically, you'd delete it manually.)