Planning Agile scrum master for the first time, any tips?

Adaptive approaches are suitable when there is a benefit and ability to provide incremental value to stakeholders while recognizing that requirements are evolving and can't be defined up front. Building a new software application based on a high level vision is one example. The greater the uncertainty and/or complexity, the more an adaptive approach might be worth considering.

On the other hand, a predictive approach is suitable when dealing with projects where there are constraints preventing incremental value delivery and where the requirements can or have to be defined early in the life of the project. Building a bridge is one such example.

Kiron