So after expensive playing today, (12 hours or so) we have found that 1 EMP 3 + 2 merc fleets in transports, for the most part deals with the counterattack waves. Sadly for us, the Zenith descendant has gotten wise to our tricks, and now sends 200 or so auto bombs at us. We haven't found a way to really deal with those yet, but we got at least 12 more in the NW area of our X map to deal with, so I'm sure we will find something interesting to do. Now that we have our economy setup really nice, they aren't really as much of a threat as they were at the beginning. We now have the capability of using mk3 and mk4 ships if we need them, and those do help alot. Also with logistics placed on all the major roads, we get where we need to go very quickly.