Your top 3 systems should be perma buffed by titanium/dust fueled singularities 25% multiplicative bonuses to FIDSI. Surplus titanium and or hyperium can make them mature even faster They mature to colony super quick since you'll set them on lavas, ashes, deserts and the like.
Their outposts DON'T draw anything from a main colony - so you can plop a bunch of those at once without stress They have a industry law that buffs 'outposts' and gives ( temp) super approval bonus Compared to how much I'm struggling with the vodyani the riftborn seem piece of cake :).