Just to throw my two cents in I personaly like to take physical strenght,intelligence[i never really use it],cunning,and political savvy down to -50% then bump up construction aptitude to 150% the hightest it can go.Then I like to add my ship atk. and def. as high as I get it.Under advance traits I select temporal knowledge[for the temp.spaceyard]and hardy industrialists in the game this allows me to build with 11kt in construction!
Some thing I do slowly during my game I start to convert my min. org. rad. facilities with monoliths then my homeworld can make about 34kt on each resource.This is one thang I have had nice results with.