I only think 1 former needs to go and assist at Zetaris mine building as by the time they get their the thing will be half done and having 3 formers building the mine wont be significantly better then having 2 do it. Unless your planing on having thouse formers travel East of Zetaris and contribute to terraforming thouse as of yet untouched areas. I would be all for that but if your going to send them right back to ware they came from dont bother.
Have one of the formers start farm/solar panal on the rolling 1000m+ square thats over in that Area, this will be good for Zetaris to work soon.
Also as I said Earlier Zetaris dosn't need to do war Production now, it should build a Tanks to keep Growth up. It can focus on other tasks later.
Dont forget to escort the Pod from Matrix as their are still worms up in that area ware the new base will go.
Oh and take a look at the Chat Log, its kinda rambly but theirs a few good ideas in their too.