5-year techo to record the first five years of getting married!

Hi guys, I am about to get married next year and would like to go back to planning/journaling manually. I'm toying with the idea of getting a 5-year techo to mark the first five years of my marriage. Any ideas on what is the best way to record and use the 5-year techo?

Also, would it be best to keep a separate hobonichi for planning (appointments, tasks, etc). Thanks to everyone in advance!