have my G15 spam buttons 8 and 9 and not have them do anything on my hunter. Then I just play the hunter(except for looting basically).
It might just be your choice of words, but if you really mean to use the G-15 delay feature to automatically feed keystrokes to your WoW client then you'll fall foul of the ToS and run a very high risk of getting your accounts banned.

As Chranny said, automation is a very big no-no.

Would their be something significantly better without requiring me to actually have experience at dualboxing?
Although there's a small cost associated with it, Keyclone remains the simplest turnkey solution.