how to implement function copy-subword-to-irc-buffer

["B. T. Raven" <nihil@nihilo.net>]

I think I need (thing-at-point 'word), (buffer-list), set point and
mark, copy-region-as-kill-no-mark, and other usual suspects to implement
this but really want to automatically copy the substring of the word
before point or the whole word if point is in whitespace after the word.
This (sub)string should go to the point in the irc buffer (one whose
buffer-name starts with #) and then make that irc buffer current.

Is this doable? I want to assign this function to some keychord but am
not sure what would be suitable (in keeping with traditional key
assignment philosophy). I have standard binding for almost every thing
but single character cursor movement. Is there a way of getting a list
of all key combos (and/or ranges of key combos) that are not currently
bound?

Thanks,

Ed