where is the best way to start. I want build a iOS with kmp. should i use to start it from the KMP plugin and migrate to java17 etc. or from the compose kmp template. I also want try how it goes with TDD and try to build everything with kotlin. I think the test stuff and the renaming of the packages etc is more work with the compose kmp template?

If you plan to use Compose Multiplatform you can use: https://terrakok.github.io/Compose-Multiplatform-Wizard/ to start your project

Oh thanks ... this looks promising