howdy Skullchewer and welcome to the forums!

you might be over thinking the problem. for basic setups, you really have no need to use keymaps. just put the macros on the action bar slots that have the same keys, and when you hit that key... all wows will receive it and do the action.

check out this link for more info: [Keyclone] step-by-step wow macro setup (level 1.5)