There are many ways simpler to achieve this, easier if the coding agent support sub-agent (which mostly do out of the box). Eg. On opencode there's explorer su

There are many ways simpler to achieve this, easier if the coding agent support sub-agent (which mostly do out of the box). Eg. On opencode there's explorer subgagent that we can set to use lower level model. Many people even use haiku level model for this.