Give me your teacher's job, I'll take it.
1) Spend some cash on lesson plans online.
2) Pay for some multiple choice question tests/homework.
3) Enjoy my 3 months of summer vacation.
Wow, you would make a shitty teacher.
1) Lesson plans aren't just pieces of paper that teachers have to file with their principal. They have to be implemented. "Sit down, shut up, study!" is not a lesson plan. What if you get any special needs students? ESL students? What about classroom management? You'd quickly find yourself on the ass-end of a lawsuit for making someone's speshul snowflake mad.
2) If you can purchase tests/questions online, so can your students. The validity of your tests is now nil. Besides, multiple choice is a pretty poor mode of question when it comes to higher-level reasoning skills and concepts. You should be pummeled by a book on Bloom's Taxonomy.
3) Ha! Good luck on that one. You'd be out of a job way before then. Enjoy the poor house.
Nowhere in that list do you have the word teach.