If going with Cressi Garas I would get the interchangeable blade version for later upgrades.

Cressi Gara Modular Impulse Fins for Freediving with Interchangeable Blades , Designed and made in Italy https://www.amazon.com/dp/B089NC15PY/ref=cm_sw_r_awdo_navT_a_6X2K2RK49Y1WYK3AVWNN