Criticize Totem pole + Level Shifter topology
I think without resistor (and zener) values and specific BJTs there's not much that can be said other than "looks ok", except you'll mostly likely want a decoupling cap in parallel with your push-pull stage.

You could also add a speed-up capacitor in parallel with RG10 if this is going to be switched at high frequency all the time.



Regarding the PNP/NPN push-pull transistors, you generally want a hfe of at least 200 with these, so they saturate easily; with 
BC847, I'd go with the "B" grade/variant which has 200/290/450 min/typ/max hfe.

It's hard to be sure about these things, but the issue @MadHatter mentioned (exceeding the Vbe spec on the top of the push-pull transistors) doesn't seem to show up in simulation, even with 30V source.



YMMV on these things.