If it's warm enough, I'm a big fan of full foot fins for liveaboards. Better power than their open foot versions and one less thing to deal with. I've used the same pair of Mares Superchannels for 12 years. They have the distinction of having the highest speed and thrust of any fins ever tested by Scubalabs back when they still did objective testing and the foot pockets fit my wide feet well. Of course the big freediving fins will be even more powerful, but are less controllable and are harder to pack.
You do have to get creative packing freediving fins - I love them and wouldn't dream of leaving them home for most dives, but they do require extra planning.
I currently try to book a window seat so I can carry them on (skateboard style) and slide them between the seat and the wall. If I can't do that, I lay them flat where my feet go and just straddle them the whole flight, or see if I can get them stored in a closet on the plane. It can be annoying, but I haven't found anything that works better in currents or surge.
I have a lot of control with them too, but it takes practice and you need to adapt your techniques - I can't back-fin in them but can do most other kicks (or variations with the functional equivalent) easily. I do a lot of photography so precise control is important and my super long fins deliver.
Learning to use them was pretty funny though and I crashed into the wall (in the pool!) multiple times before I figured it out.