I don't anticipate a problem with that, one case each will go fine on something like a decent sized Bell, even for 5 people. I'n not planning to hire an R22! Certainly easier for 3 though I agree.

My only other helicopter experience was a transfer from the Peninsula Bangkok to Don Muang, plenty of room for both people and bags.

Thanks for the address above, will try them and see if they can be persuaded to go out to the airport.