With really cheap space access you can do assembling in space. No motors, just plain old human hands in space. Tennis court sized shield? Take it up like a lon

With really cheap space access you can do assembling in space. No motors, just plain old human hands in space. Tennis court sized shield? Take it up like a long and precious Persian mat and let the humans rig the thing in orbit. From there, attach fuels tanks and you are good to go for your insertion burns.