ouch.. 1 monitor... then yes, you'd want them on one machine. (if you actually do want to use 2 machines, then yes.. you would need a keyclone license for the other machine as well)

you could run keyclone's maximizer and organize your screen so one of them is small and only takes up a small portion of the screen (watch the aspect ratio).. or you could run 1 behind the other, and flip between them when you need them. personally, i'd use maximizer and make a small screen in the upper right.

if you have any other questions, please feel free to drop me a note.

have a great night