The best way to travel around Marianas Trench is by renting a car. The car rental costs around $80 per day, and it is a convenient way to travel to all the mentioned places. The total travel time between all the locations is around 2 hours.
If you have more time, you can add a visit to the Ka Tree's Beach or take a hiking trail on Mount Tapochau. However, if you have less time, you can skip the food sampling and go straight to the Trench Lookout to catch the beautiful sunset.