Today I checked the beam jitter induced by the AOM frequency shift.
I measured beam shift by a beam profiler at ~2.5m distance from the AOM.
The beam shift was about 0.16mm by ~15MHz frequency shift and this is small enough for this experiment.

[note]
Tweaking the alignment of double-pass AOMs is needed when the beams are locked to the folded cavity in order to maximize the diffracted beam power.