I don't know much about mission making, we have two too five in 1PARA that does missions and modding. One tip would be to register on 1PARA forum and they might be able to help you out
We even have our own modded AI's on our COOP missions as the standard AI is meh. Think T8 has his AI for download somewhere as well
Also there are players from around the world playing, give it a try
Some on our sag have pings of over 300 and still plays