I FOUND SPACE! I deleted the Bootstrap.dat.old (21GB) file and now it's 31GB Bitcoin-qt and 25.2GB Armory. I will look into finding a way to move the files since you weren't that helpful. Thanks anyway...kinda.
Bitcoin-qt will look for the blockchain in specific (default) folder where it puts it, so I don't think you'd be able to move the blockchain to external HDD.
If you're too concerned about HDD space, try looking into MultiBit.