Andrea,
2019 we used an Iridium Go with Predict Wind unlimited data plan. Expensive, but best choice for weather, unlimited SMS, limited free calls, email & tracking. Best decision I made.
Cel-Fi Go is great, but only if you have coverage which is not very often. Putting a phone in a bag and winching it to the top of the mast with a hot spot turned on works well for patchy coverage.
Forget about internet browsing. Ask a friend to brows for you and to SMS/email the information to you.
HF Pactor Sail mail coverage/propagation was very poor in the Kimberly.
Have a great trip.
Craig