Good stuff all around... except for the flight rings. I know that's what they are in the source material, but handwavium doesn't quite work that way.
Although...
Maybe...
If the rings themselves can fly, but can't lift anything more than their own weight, that might work. We'd have to show how they weren't just solid metal or plastic before they were waved to make this work, too. (They'd still be useful in zero-G as maneuver engines, but wouldn't do much in a gravity well.)
--
Rob Kelk
"Governments have no right to question the loyalty of those who oppose
them. Adversaries remain citizens of the same state, common subjects of
the same sovereign, servants of the same law."
- Michael Ignatieff, addressing Stanford University in 2012
Although...
Maybe...
If the rings themselves can fly, but can't lift anything more than their own weight, that might work. We'd have to show how they weren't just solid metal or plastic before they were waved to make this work, too. (They'd still be useful in zero-G as maneuver engines, but wouldn't do much in a gravity well.)
--
Rob Kelk
"Governments have no right to question the loyalty of those who oppose
them. Adversaries remain citizens of the same state, common subjects of
the same sovereign, servants of the same law."
- Michael Ignatieff, addressing Stanford University in 2012