[Ruatha]

Earlier it was said "I usually mothball the pating and cable starbases until the "..
To unmothball them costs alot, better to put the queue on hold and restart it one turn before the generator is built.
Ships also costs alot.
Therefore I use lot's of shipyard ships(! Hmm, logical gap here...)
Send one to each star and builds a construction starbase there, that starbase starts construction of the generator base.
Meanwhile 10 ships with spaceyards components zips around to each of these stars and builds 10 new bases with spaceyards, then heads off for the next and the next and the...
These new 10 bases starts construction of the plating and cable bases, put's queue on hold until one turn before the generator is finished.
After that you have a ringworld and 11 construction bases to build weapon platforms and whatever...

To build sphereworlds increse number of bases..