dear kelly!
i think your set is great. btw, i must say that all combinations of those magnificent pieces seem to work. strange enough, the complete cycle have a great internal coherence.
the only thing i would prefer is to end with a calm one, maybe 18. i understand your desire to have a grand finale but think about prokofiev himself did choose a very quiet and slow end to the cycle (which ends ppp, btw).
anyhow, it's very nice to play and to listen to the visions. go for it!
best!