i've realized a way to successfully launch the pieces at a 60° angle. i didn't know the ring generator was any more than just that (and though very nifty, i hadn't any need of a ring), but that glorious bit of software is capable of more than just rings. it can rotate an entire blueprint to any angle while keeping all the individual components of one's rocket aligned! it really is quite fantastic and i should have downloaded it as soon as i was aware of it
i must say, it feels a bit like cheating, launching a rocket tilted to such a degree, but it's added difficulty negates that cheating feeling