All Origin games will download and install on the drive you've specified when installing Origin. If you want to move them to another drive you can use a Symbolic Link on the original drive/folder to point to the new drive/folder.
http://www.sevenforums.com/tutorials/278262-mklink-create-use-links-windows.html
It's what I do for all my Origin and Steam games when I want to play them. Move them to the SSD and make a Symbolic Link from the larger HDD where the client has installed them. Then when I'm finished move them back again, freeing up the space for the next game.
