Potential Paths: Path 1: Using MagicSchool AI for lesson planning and content generation. It has an intuitive interface and provides a comprehensive suite for educators with features like lesson planning, content generation, and assessment creation which align seamlessly with the user's query. Path 2: Using a combination of Education CoPilot and Enlighten AI. Education CoPilot can be used for lesson planning and student engagement with features like AI lesson planner, educational handouts, and project outlines. Enlighten AI can be used for giving AI-powered grading and feedback on student work that aligns with student engagement part of the query.

Final Narrative:

For an AI-driven tool that caters to the needs of a kindergarten teacher, I recommend focusing on MagicSchool AI. Based on your requirements of lesson planning and student engagement, MagicSchool AI offers numerous features that could be of great assistance.

The first step is to register and set up your account on MagicSchool AI. Don't worry about the cost, it's currently free for teachers.

Once your account is set up, explore the Lesson Planning feature which provides a library of lesson plans tailored to different subjects, grade levels, and learning objectives. This feature can drastically simplify your lesson planning process and save you valuable time.

Making use of the Content Generation feature, you can create original, standards-aligned educational content suitable for your kindergarten students. This allows you to personalize learning materials and adapt them to the learning pace and capabilities of your class.

In addition, the Assessment Creation feature generates custom assessments that align with your curriculum and learning objectives, assisting you in tracking your students' progress effectively.

To further improve your students' learning experience, use the Text Leveling feature. This adapts reading materials to various proficiency levels within your classroom. So for instance, if some of your kindergarten students are advanced readers, you can provide them with more complex materials to keep them stimulated.

Finally, the Advanced Proofreading function identifies writing issues in students' assignments and offers constructive feedback. Although this might be more applicable to students of higher grades it's a good feature to be aware of for the future.

Overall, the features provided by MagicSchool AI seem to align well with your needs. Therefore, going with this single tool should be optimal, as it covers both lesson planning and student engagement aspects you were looking for, without needing to juggle multiple platforms.