Our goal with DayZ Epoch from the start was to make the mod work with the maps/islands as they are released by the author without the need for a separate mod for each map.
The best way to do that right now is by using play.withsix.com  as they support auto loading custom mod sets. To see a video on how to use play withSix to connect to custom dayz epoch servers here: .
Example: If a server has @taviana loaded playwith six will automatically give the user a orange "Update" button. After installing the content the button will change green and say "Join". This will be the recommend method to install and use custom islands with DayZ Epoch