Zombie Squats vs Front Squats

I have started doing zombie squats. I like them but they fatigue me before the actual front squats.
As I just started again.,it’s fairly close to what I can /could front squat. 100 kgx2 versus 110 kg single.
Workout is triples.

What is a good way of structuring the workout to include both or could I simply just zombie squat instead?

Also am I better off with a thinner or thicker barbell?
The thinner bar seems to get closer to my throat.