lakeroadster
When in doubt... build hell-for-stout!
Spin indeed helps with stability...Spin wouldn't help. A real bullet spins at 30,000rpm to get some stability.
https://en.wikipedia.org/wiki/Spin_stabilization
The second stage of the Jupiter C used spin stabilization. Designed by Wernher von Braun in 1956 for his proposed Project Orbiter, the Jupiter-C obviated the need for a guidance system in the upper stages