Yesterday, I went exploring and found more Sunnyside. It's the same rock, not quite as tall, but it's significantly steeper so likely about the same route lengths. The cliff band is maybe 40m long, looks really solid and has some cool-looking features! The approach could branch off from the Sunnyside trail, and I'd guess it's about twice as far a walk.
I'm concentrating on Munson, and have no desire to put in the work here, but look forward to reaping the benefits of someone else's efforts. I'll gladly take anyone out who's willing to bolt to show you where it is though. PM me.